diff --git a/crates/xfa/README.md b/crates/xfa/README.md
index db7f75f60f..ecf0aa47b3 100644
--- a/crates/xfa/README.md
+++ b/crates/xfa/README.md
@@ -25,7 +25,7 @@ that warning and keeps the existing layout and accepted widget values.
   margins, borders (edge order rules), captions with reserves, check-button items, pictures,
   rich text (`exData` XHTML: paragraphs, `br`, bold/italic/underline/size spans, embedded fields),
   text-field limits (`text/maxChars` and `exData/maxLength`, carried into AcroForm `/MaxLen`),
-  inline JPEG, PNG and GIF images, lines, rectangles, occurrences, `breakBefore`/`breakAfter`, overflow
+  required fields and exclusion groups (`<validate nullTest="error">`), inline JPEG, PNG and GIF images, lines, rectangles, occurrences, `breakBefore`/`breakAfter`, overflow
   leaders, `columnWidths` and `colSpan`.
 - **Layout** (`layout`): positioned, `tb`, `lr-tb`/`rl-tb`, `table` and `row` layouts; a
   container without a width is as wide as its content; flow across content areas and pages with
@@ -50,7 +50,8 @@ that warning and keeps the existing layout and accepted widget values.
   scripts, and signature fields, each named by its SOM path (`form1[0].page1[0].sign[0]`, as
   fields under one for each step above it) because other viewers lay a dynamic form out again
   and find a signature by that name. A box whose path, or a part of it, the file already gives
-  another field keeps its own name, and a new layout keeps a signature a generated box holds. Appearance streams are left empty for the forms layer to
+  another field keeps its own name, and a new layout keeps a signature a generated box holds. A field or exclusion group that must be filled in gets the `Required` flag (a radio
+  group on its group field), which viewers outline when they highlight fields. Appearance streams are left empty for the forms layer to
   generate. Each field keeps its SOM path in `/PCSom`; the AcroForm gets `/PCXfaLayout` so a saved form is not laid out
   twice. The XFA packets stay, so Adobe's viewers keep rendering the form from them.
 
diff --git a/crates/xfa/src/layout/draw.rs b/crates/xfa/src/layout/draw.rs
index cdf5c81446..b61ee07ff8 100644
--- a/crates/xfa/src/layout/draw.rs
+++ b/crates/xfa/src/layout/draw.rs
@@ -1,8 +1,8 @@
 use super::common::clean_name;
 use super::items::{Item, Rounded, Turned};
 use super::{
-    Arc, Border, Ctx, Draw, ExclGroup, Face, Font, Layout, Layouter, MAX_DEPTH, MAX_IMAGE_BYTES, Node, Para, Rect, SomIndices, Stroke, Subform,
-    Value, XfaError, data_path, text,
+    Arc, Border, Ctx, Draw, ExclGroup, Face, Field, Font, Layout, Layouter, MAX_DEPTH, MAX_IMAGE_BYTES, Node, Para, Rect, SomIndices, Stroke,
+    Subform, Value, XfaError, data_path, text,
 };
 
 impl Layouter<'_> {
@@ -304,6 +304,8 @@ impl Layouter<'_> {
         self.push_block(block)
     }
 
+    /// Draw a `draw` element (static text, an image, a line, a rectangle or an arc) in `rect`,
+    /// inside its border and margin.
     fn draw_draw(&mut self, d: &Draw, rect: Rect, ctx: &Ctx) -> Result<(), XfaError> {
         if let Some(b) = &d.common.border {
             self.draw_border(b, rect)?;
@@ -330,7 +332,9 @@ impl Layouter<'_> {
     }
 
     /// Draw exclusion group `g` at `rect`: its border, then each of its buttons where its layout
-    /// puts it, as one radio group, the one its data selects turned on.
+    /// puts it, as one radio group, the one its data selects turned on. A group that must be
+    /// answered makes each button required. `sib` is the group's index among same-named
+    /// siblings, for its SOM path.
     fn draw_group(&mut self, g: &ExclGroup, rect: Rect, ctx: &Ctx, depth: usize, sib: usize) -> Result<(), XfaError> {
         if let Some(b) = &g.common.border {
             self.draw_border(b, rect)?;
@@ -382,6 +386,15 @@ impl Layouter<'_> {
                 let on = f.items.first().cloned().filter(|s| !s.trim().is_empty()).unwrap_or_else(|| (i + 1).to_string());
                 let tip = f.tooltip.clone().or_else(|| g.tooltip.clone());
                 let chosen = selected.as_deref() == Some(on.as_str());
+                // A group that must be answered makes each of its buttons required, as the group
+                // field they make is.
+                let required;
+                let f = if g.required && !f.required {
+                    required = Field { required: true, ..f.clone() };
+                    &required
+                } else {
+                    f
+                };
                 let outer = std::mem::replace(&mut self.views, views);
                 let drawn = self.draw_field(f, Rect::new(inner.x + r.x, inner.y + r.y, r.w, r.h), &ctx, Some((&group, &on, tip, chosen)), sibs.at(i));
                 self.views = outer;
diff --git a/crates/xfa/src/layout/field.rs b/crates/xfa/src/layout/field.rs
index 27ef7a8946..403cd85f8f 100644
--- a/crates/xfa/src/layout/field.rs
+++ b/crates/xfa/src/layout/field.rs
@@ -267,6 +267,7 @@ impl Layouter<'_> {
             no_scroll: f.no_scroll,
             // `push` sets where it shows.
             views: Views::ALL,
+            required: f.required,
         })))
     }
 }
diff --git a/crates/xfa/src/layout/items.rs b/crates/xfa/src/layout/items.rs
index faea3aa014..1a8c6999d0 100644
--- a/crates/xfa/src/layout/items.rs
+++ b/crates/xfa/src/layout/items.rs
@@ -152,6 +152,8 @@ pub struct Widget {
     pub no_scroll: bool,
     /// Where the field is shown: on screen, in print, or both (its annotation flags).
     pub views: Views,
+    /// The field must be filled in (`Required`); a radio button, when its group must be.
+    pub required: bool,
 }
 
 #[derive(Clone, Debug, Default, PartialEq)]
diff --git a/crates/xfa/src/model.rs b/crates/xfa/src/model.rs
index 8b09f2c1a9..a26162eb94 100644
--- a/crates/xfa/src/model.rs
+++ b/crates/xfa/src/model.rs
@@ -517,6 +517,8 @@ pub struct ExclGroup {
     pub fields: Vec<Field>,
     pub tooltip: Option<String>,
     pub scripts: Vec<Script>,
+    /// One of the buttons must be chosen (`<validate nullTest="error">` on the group).
+    pub required: bool,
 }
 
 #[derive(Clone, Debug, Default, PartialEq, Eq)]
@@ -577,6 +579,8 @@ pub struct Field {
     /// The field doesn't scroll in the direction its text runs out (`hScrollPolicy="off"` for one
     /// line, `vScrollPolicy="off"` for several): it takes no more text than it shows.
     pub no_scroll: bool,
+    /// The field must be filled in (`<validate nullTest="error">`).
+    pub required: bool,
     pub caption: Option<Caption>,
     pub value: Value,
     /// Check buttons: the on value then the off value; choice lists: the items as shown.
diff --git a/crates/xfa/src/parse.rs b/crates/xfa/src/parse.rs
index d4c473dfe4..2df4f6eb8e 100644
--- a/crates/xfa/src/parse.rs
+++ b/crates/xfa/src/parse.rs
@@ -585,12 +585,19 @@ fn parse_field(n: XmlNode, warnings: &mut Vec<String>) -> Field {
         calculate: child(n, "calculate").and_then(|c| child(c, "script")).map(|s| parse_script(s, "calculate")),
         validate: validate_el.and_then(|v| child(v, "script")).map(|s| parse_script(s, "validate")),
         validate_message,
+        required: must_be_filled(validate_el),
         numeric,
         display_picture: child(n, "format").and_then(|f| child(f, "picture")).map(text_of).map(|p| p.trim().to_string()).filter(|p| !p.is_empty()),
         keep_intact: child(n, "keep").and_then(|k| k.attribute("intact")).is_some_and(|v| v == "contentArea" || v == "pageArea"),
     }
 }
 
+/// Whether a `<validate>` element makes its object one that must be filled in: `nullTest="error"`
+/// (`warning` only recommends it, and `disabled`, the default, leaves it optional).
+fn must_be_filled(validate: Option<XmlNode>) -> bool {
+    validate.is_some_and(|v| v.attribute("nullTest").is_some_and(|t| t.trim() == "error"))
+}
+
 fn parse_script(s: XmlNode, activity: &str) -> Script {
     let ct = s.attribute("contentType").unwrap_or("");
     Script { activity: activity.to_string(), text: text_of(s).trim().to_string(), formcalc: !ct.to_ascii_lowercase().contains("javascript") }
@@ -672,6 +679,8 @@ fn parse_page_set(n: XmlNode, warnings: &mut Vec<String>, depth: usize) -> PageS
     PageSet { areas }
 }
 
+/// A `subform` element: its own attributes, its page set if it has one, and the nodes it holds,
+/// `depth` levels down (for the nesting limit).
 fn parse_subform(n: XmlNode, warnings: &mut Vec<String>, depth: usize) -> Subform {
     let common = parse_common(n);
     let mut children_out = Vec::new();
@@ -706,6 +715,9 @@ fn parse_subform(n: XmlNode, warnings: &mut Vec<String>, depth: usize) -> Subfor
     }
 }
 
+/// The template object element `c` stands for (a subform, area, field, draw or exclusion group,
+/// with what it holds), or `None` for anything else and past [`MAX_DEPTH`] levels. What can't be
+/// read faithfully is noted in `warnings`.
 fn parse_node(c: XmlNode, warnings: &mut Vec<String>, depth: usize) -> Option<Node> {
     if depth > MAX_DEPTH {
         return None;
@@ -730,6 +742,7 @@ fn parse_node(c: XmlNode, warnings: &mut Vec<String>, depth: usize) -> Option<No
             fields: children(c, "field").map(|f| parse_field(f, warnings)).collect(),
             tooltip: child(c, "assist").and_then(|a| child(a, "toolTip")).map(text_of).map(|t| t.trim().to_string()).filter(|t| !t.is_empty()),
             scripts: parse_events(c),
+            required: must_be_filled(child(c, "validate")),
         })),
         _ => return None,
     })
diff --git a/crates/xfa/src/pdf.rs b/crates/xfa/src/pdf.rs
index 5450d20ddc..64a59c190a 100644
--- a/crates/xfa/src/pdf.rs
+++ b/crates/xfa/src/pdf.rs
@@ -179,17 +179,62 @@ fn existing_fields(doc: &Document, catalog: &Dict) -> (HashMap<String, Signed>,
     (out, names)
 }
 
+/// Required (`Ff` bit 2), which viewers outline when they highlight a form's fields, for widget
+/// `w` when it must be filled in. A radio button's flags are its group's (the group takes it,
+/// [`Emitter::radio_group`]), and a push button keeps no value (ISO 32000-2 §12.7.5.2.2), so
+/// there is nothing it could be required to hold.
+fn required_flag(w: &Widget) -> i64 {
+    if w.required && !matches!(w.kind, WidgetKind::Radio { .. } | WidgetKind::Button { .. }) { 1 << 1 } else { 0 }
+}
+
 impl Emitter<'_> {
     fn da(face: &Face) -> Vec<u8> {
         format!("/{} {} Tf {} rg", face.resource_name(), n(face.size), rgb(face.color)).into_bytes()
     }
 
-    fn populate_widget_kind(&mut self, w: &Widget, d: &mut Dict, mk: &mut Dict) -> (i64, bool, Option<String>) {
+    /// The field of radio group `group`, which button `w` is a kid of: the one an earlier button
+    /// made (required too when `w` must be chosen), or a new field of the form, with `w`'s text
+    /// look and the group's SOM path (the button's without its last step).
+    fn radio_group(&mut self, w: &Widget, group: &str) -> Result<ObjRef, XfaError> {
+        if let Some((p, _)) = self.radio_groups.get(group) {
+            let p = *p;
+            // A later button that must be chosen makes the group required too.
+            if w.required {
+                self.doc.update_dict(p, |g| {
+                    let ff = g.int(b"Ff").unwrap_or(0);
+                    g.set(b"Ff".to_vec(), Object::Int(ff | (1 << 1)));
+                })?;
+            }
+            return Ok(p);
+        }
+        let mut g = Dict::new();
+        g.set(b"FT".to_vec(), Object::name("Btn"));
+        let required = if w.required { 1 << 1 } else { 0 };
+        g.set(b"Ff".to_vec(), Object::Int((1 << 15) | (1 << 14) | required));
+        g.set(b"T".to_vec(), Object::String(PdfString::text(group)));
+        g.set(b"V".to_vec(), Object::name("Off"));
+        g.set(b"DA".to_vec(), Object::String(PdfString::literal(Self::da(&w.face))));
+        g.set(b"Kids".to_vec(), Object::Array(Vec::new()));
+        let group_som = w.som.rsplit_once('.').map(|(g, _)| g.to_string()).unwrap_or_else(|| w.som.clone());
+        g.set(SOM_KEY.to_vec(), Object::String(PdfString::text(&group_som)));
+        let p = self.doc.add(Object::Dict(g));
+        self.radio_groups.insert(group.to_string(), (p, Vec::new()));
+        self.fields.push(p);
+        self.field_count += 1;
+        Ok(p)
+    }
+
+    /// Fill in widget `w`'s field by its kind (field type, flags, value, appearance states, items,
+    /// action) in `d` and `mk`. Returns its field flags, whether it is a top-level field (not a kid
+    /// of its radio group's field, nor a signature field under the fields generated for its SOM
+    /// path), and for such a signature field the SOM path of the generated field above it.
+    fn populate_widget_kind(&mut self, w: &Widget, d: &mut Dict, mk: &mut Dict) -> Result<(i64, bool, Option<String>), XfaError> {
         let r = w.rect;
         let mut ff: i64 = 0;
         if w.read_only {
             ff |= 1;
         }
+        ff |= required_flag(w);
         let mut top_level = true;
         // The SOM path of the generated field above this one, for a signature field named by its
         // SOM path.
@@ -334,26 +379,7 @@ impl Emitter<'_> {
             }
             WidgetKind::Radio { group, on, .. } => {
                 top_level = false;
-                let parent = match self.radio_groups.get(group) {
-                    Some((p, _)) => *p,
-                    None => {
-                        let mut g = Dict::new();
-                        g.set(b"FT".to_vec(), Object::name("Btn"));
-                        g.set(b"Ff".to_vec(), Object::Int((1 << 15) | (1 << 14)));
-                        g.set(b"T".to_vec(), Object::String(PdfString::text(group)));
-                        g.set(b"V".to_vec(), Object::name("Off"));
-                        g.set(b"DA".to_vec(), Object::String(PdfString::literal(Self::da(&w.face))));
-                        g.set(b"Kids".to_vec(), Object::Array(Vec::new()));
-                        // The group's SOM path: the button's without its last step.
-                        let group_som = w.som.rsplit_once('.').map(|(g, _)| g.to_string()).unwrap_or_else(|| w.som.clone());
-                        g.set(SOM_KEY.to_vec(), Object::String(PdfString::text(&group_som)));
-                        let p = self.doc.add(Object::Dict(g));
-                        self.radio_groups.insert(group.clone(), (p, Vec::new()));
-                        self.fields.push(p);
-                        self.field_count += 1;
-                        p
-                    }
-                };
+                let parent = self.radio_group(w, group)?;
                 d.set(b"Parent".to_vec(), Object::Ref(parent));
                 // Appearance states are PDF names, so a space becomes an underscore. The datasets
                 // still hold the template's text (`/PCOn`); writing the name back would drop the selection.
@@ -379,7 +405,7 @@ impl Emitter<'_> {
                 write_button_action(w.action.as_ref(), d);
             }
         }
-        (ff, top_level, under)
+        Ok((ff, top_level, under))
     }
 
     /// Write laid-out widget `w` on `page` as an AcroForm widget annotation (and its field), with
@@ -423,7 +449,7 @@ impl Emitter<'_> {
         if matches!(w.kind, WidgetKind::CheckBox { round: true, .. } | WidgetKind::Radio { round: true, .. }) {
             d.set(ROUND_KEY.to_vec(), Object::Bool(true));
         }
-        let (ff, top_level, under) = self.populate_widget_kind(w, &mut d, &mut mk);
+        let (ff, top_level, under) = self.populate_widget_kind(w, &mut d, &mut mk)?;
         if !mk.is_empty() {
             d.set(b"MK".to_vec(), Object::Dict(mk));
         }
diff --git a/crates/xfa/src/tests.rs b/crates/xfa/src/tests.rs
index ecae0d051d..04f9ac731a 100644
--- a/crates/xfa/src/tests.rs
+++ b/crates/xfa/src/tests.rs
@@ -504,6 +504,10 @@ fn tables_break_across_pages_and_repeat_their_header_row() {
     assert_eq!(all.len(), all.iter().collect::<std::collections::HashSet<_>>().len(), "field names are unique");
 }
 
+/// Laying a dynamic form out into its PDF replaces the placeholder page with the template's pages
+/// and adds its fields (a radio group once), keeps the XFA packets and `/NeedsRendering` for Adobe's
+/// viewers, writes each `/DR` font as an object of its own, and marks the form so it isn't laid out
+/// twice.
 #[test]
 fn rendering_into_the_pdf_replaces_the_placeholder_page_and_adds_fields() {
     let mut doc = Document::open(Arc::new(shell(&template(2)))).unwrap();
@@ -542,6 +546,71 @@ fn rendering_into_the_pdf_replaces_the_placeholder_page_and_adds_fields() {
     assert!(!is_dynamic(&doc));
 }
 
+/// A field or exclusion group that must be filled in (`<validate nullTest="error">`) becomes a
+/// Required field, which viewers outline when they highlight a form's fields: a radio group on the
+/// group field, its buttons' flags being the group's (a button of its own that must be chosen
+/// makes the group required too). `nullTest="warning"` only recommends a value,
+/// so it, like no test, leaves the field optional. A push button keeps no value (ISO 32000-2
+/// §12.7.5.2.2), so it is never required.
+#[test]
+fn fields_that_must_be_filled_in_are_required() {
+    let xdp = r##"<?xml version="1.0" encoding="UTF-8"?>
+<xdp:xdp xmlns:xdp="http://ns.adobe.com/xdp/"><template xmlns="http://www.xfa.org/schema/xfa-template/3.3/"><subform name="form" layout="tb">
+<pageSet><pageArea name="p"><contentArea x="0.5in" y="0.5in" w="7.5in" h="10in"/><medium short="8.5in" long="11in"/></pageArea></pageSet>
+<field name="must" w="2in" h="0.3in"><ui><textEdit/></ui><validate nullTest="error"/></field>
+<field name="should" w="2in" h="0.3in"><ui><textEdit/></ui><validate nullTest="warning"/></field>
+<field name="may" w="2in" h="0.3in"><ui><textEdit/></ui></field>
+<field name="agree" w="2in" h="0.3in"><ui><checkButton/></ui><items><integer>1</integer><integer>0</integer></items><validate nullTest="error"/></field>
+<field name="go" w="1in" h="0.3in"><ui><button/></ui><caption><value><text>Go</text></value></caption><validate nullTest="error"/></field>
+<exclGroup name="answer" layout="lr-tb"><validate nullTest="error"/>
+ <field name="yes" w="1in" h="0.3in"><ui><checkButton shape="round"/></ui><items><text>Y</text></items></field>
+ <field name="no" w="1in" h="0.3in"><ui><checkButton shape="round"/></ui><items><text>N</text></items></field>
+</exclGroup>
+<exclGroup name="optional" layout="lr-tb">
+ <field name="a" w="1in" h="0.3in"><ui><checkButton shape="round"/></ui><items><text>A</text></items></field>
+</exclGroup>
+<exclGroup name="second" layout="lr-tb">
+ <field name="b" w="1in" h="0.3in"><ui><checkButton shape="round"/></ui><items><text>B</text></items></field>
+ <field name="c" w="1in" h="0.3in"><ui><checkButton shape="round"/></ui><items><text>C</text></items><validate nullTest="error"/></field>
+</exclGroup>
+</subform></template></xdp:xdp>"##;
+    let mut doc = Document::open(Arc::new(shell(xdp))).unwrap();
+    render_into(&mut doc).unwrap();
+    let catalog = doc.get(doc.root().unwrap());
+    let acro = doc.resolve(catalog.as_dict().unwrap().get(b"AcroForm").unwrap());
+    let fields = doc.resolve(acro.as_dict().unwrap().get(b"Fields").unwrap()).as_array().unwrap().clone();
+    let required: std::collections::BTreeMap<String, bool> = fields
+        .iter()
+        .map(|f| {
+            let d = doc.resolve(f).as_dict().unwrap().clone();
+            let name = d.get(b"T").and_then(|t| doc.resolve(t).as_string().map(|s| s.to_text())).unwrap_or_default();
+            (name, d.int(b"Ff").unwrap_or(0) & 2 != 0)
+        })
+        .collect();
+    let leaf = |n: &str| required.iter().find(|(k, _)| k.contains(n)).map(|(_, r)| *r);
+    assert_eq!(leaf("must"), Some(true), "{required:?}");
+    assert_eq!(leaf("should"), Some(false), "a warning only recommends a value");
+    assert_eq!(leaf("may"), Some(false));
+    assert_eq!(leaf("agree"), Some(true), "a check box too");
+    assert_eq!(leaf("go"), Some(false), "a push button holds no value to fill in");
+    assert_eq!(leaf("answer"), Some(true), "the radio group field");
+    assert_eq!(leaf("optional"), Some(false));
+    assert_eq!(leaf("second"), Some(true), "a later button that must be chosen makes its group required");
+    // The buttons themselves carry no Required flag: theirs are the group's.
+    for group in ["answer", "second"] {
+        let field = fields
+            .iter()
+            .map(|f| doc.resolve(f).as_dict().unwrap().clone())
+            .find(|d| d.get(b"T").and_then(|t| doc.resolve(t).as_string().map(|s| s.to_text())).is_some_and(|t| t.contains(group)));
+        let kids = field.and_then(|d| d.get(b"Kids").map(|k| doc.resolve(k).as_array().cloned().unwrap_or_default())).unwrap_or_default();
+        assert!(!kids.is_empty(), "{group} has its buttons as kids");
+        for kid in &kids {
+            let ff = doc.resolve(kid).as_dict().and_then(|d| d.int(b"Ff")).unwrap_or(0);
+            assert_eq!(ff & 2, 0, "{group}: a button is not Required itself");
+        }
+    }
+}
+
 /// A dynamic form's own text that the standard fonts can't draw is laid out anyway and reported
 /// once, never written as `?` silently.
 #[test]
diff --git a/parity/acrobat-features.toml b/parity/acrobat-features.toml
index 09a50967e8..1dadae3e10 100644
--- a/parity/acrobat-features.toml
+++ b/parity/acrobat-features.toml
@@ -5447,8 +5447,8 @@ milestone = "M12"
 status = "partial"
 commands = ["file.open"]
 tools = ["doc_open", "doc_info", "form_fields", "form_fill", "js_run", "form_focus"]
-evidence = ["crates/xfa/src/tests.rs::a_draw_turns_counter_clockwise_about_its_anchor", "crates/xfa/src/tests.rs::layout_places_captions_fields_and_sizes_containers_to_their_content", "crates/xfa/src/tests.rs::tables_break_across_pages_and_repeat_their_header_row", "crates/xfa/src/tests.rs::rendering_into_the_pdf_replaces_the_placeholder_page_and_adds_fields", "crates/engine/src/tests.rs::dynamic_xfa_forms_are_laid_out_on_open_filled_and_saved_incrementally", "crates/automation/tests/it/automation.rs::dynamic_xfa_forms_open_render_fill_and_save_through_tools", "crates/ui-egui/tests/it/xfa.rs::a_dynamic_xfa_form_is_laid_out_and_filled", "crates/xfa/src/tests.rs::nested_width_less_subforms_lay_out_in_polynomial_time", "crates/js/src/tests.rs::instance_managers_add_remove_and_count", "crates/xfa/src/tests.rs::the_form_tree_carries_values_presence_instances_and_the_events", "crates/engine/src/tests.rs::xfa_scripts_initialize_calculate_validate_toggle_and_add_rows", "crates/engine/src/tests.rs::xfa_date_arithmetic_reads_the_date_as_its_display_picture_shows_it", "crates/automation/tests/it/automation.rs::xfa_scripts_run_for_buttons_and_field_changes_through_tools", "crates/ui-egui/tests/it/xfa.rs::xfa_buttons_run_their_scripts_in_the_app", "crates/engine/src/tests.rs::hostile_xfa_open_scripts_are_merged_capped_kept_from_printing_and_noted", "crates/engine/src/tests.rs::runaway_xfa_calculations_at_open_end_quickly_with_a_report", "crates/ui-egui/tests/it/xfa.rs::a_form_whose_scripts_were_turned_off_at_open_says_so", "crates/ui-egui/tests/it/xfa.rs::scripts_turned_off_by_a_click_bring_a_closed_notice_bar_back", "crates/automation/tests/it/automation.rs::doc_info_says_when_a_runaway_script_turned_the_forms_scripts_off", "crates/xfa/src/tests.rs::the_live_form_of_nested_repeating_subforms_stops_at_its_node_budget", "crates/xfa/src/tests.rs::data_ops_of_one_event_are_one_datasets_rewrite", "crates/xfa/src/tests.rs::choice_lists_signatures_passwords_and_pictures_become_fields_and_images", "crates/xfa/src/tests.rs::choice_values_come_from_the_data_as_saved_values_and_several_for_lists", "crates/xfa/src/tests.rs::pictures_are_sized_from_their_headers_and_hostile_ones_are_refused_unallocated", "crates/engine/src/tests.rs::xfa_choice_lists_signature_and_picture_fields_open_fill_script_and_save", "crates/xfa/src/tests.rs::repeating_subforms_inside_positioned_content_get_their_instances", "crates/engine/src/tests.rs::xfa_rows_in_areas_are_laid_out_read_calculated_and_written_where_adobe_binds_them", "crates/xfa/src/tests.rs::page_area_without_occur_serves_every_body_page", "apps/pdfcraft-cli/tests/it/xfa.rs::info_reports_the_laid_out_pages_and_fields", "apps/pdfcraft-cli/tests/it/xfa.rs::text_reads_the_layout_including_a_page_absent_from_the_placeholder", "apps/pdfcraft-cli/tests/it/xfa.rs::render_matches_the_engine_layout_on_the_second_page", "apps/pdfcraft-cli/tests/it/xfa.rs::a_laid_out_form_keeps_the_original_copy_permissions", "crates/engine/src/tests.rs::filling_growable_xfa_text_reflows_and_undo_restores_the_layout", "crates/engine/src/tests.rs::xfa_text_growth_refreshes_widget_geometry_but_fixed_height_fields_keep_their_widgets", "crates/automation/tests/it/automation.rs::growable_xfa_text_paginates_after_fill_save_and_print", "crates/engine/src/tests.rs::an_xfa_script_that_fails_partway_keeps_what_it_changed_before_the_error", "crates/engine/src/tests.rs::repeated_xfa_print_buttons_run_their_click_script", "crates/automation/tests/it/automation.rs::repeated_xfa_print_buttons_work_through_tools_and_after_reopen", "crates/xfa/src/tests.rs::rich_text_max_length_reaches_the_field_and_layout", "crates/automation/tests/it/automation.rs::xfa_rich_text_max_length_is_reported_and_enforced_through_tools", "crates/xfa/src/tests.rs::bmp_and_tiff_pictures_are_decoded_and_drawn", "crates/engine/src/tests.rs::active_xfa_does_not_run_pdf_container_scripts_but_keeps_requested_alerts", "crates/engine/src/tests.rs::active_xfa_without_template_scripts_does_not_initialize_pdf_fallback_scripts", "crates/engine/src/tests.rs::inactive_xfa_and_ordinary_pdfs_keep_document_helpers_and_alerts", "crates/automation/tests/it/automation.rs::active_xfa_skips_container_fallback_scripts_after_save_and_reopen", "crates/xfa/src/tests.rs::laying_a_form_out_takes_off_the_usage_rights_it_voids", "crates/engine/src/tests.rs::a_dynamic_xfa_form_is_saved_without_the_usage_rights_its_layout_voided", "crates/xfa/src/tests.rs::faces_measure_text_at_their_standard_14_widths", "crates/xfa/src/tests.rs::rich_text_links_keep_their_address", "crates/xfa/src/tests.rs::links_in_rich_text_become_link_annotations_one_per_line", "crates/xfa/src/tests.rs::a_links_pieces_share_one_address", "crates/xfa/src/tests.rs::a_rule_between_two_pieces_of_a_link_keeps_them_apart", "crates/xfa/src/tests.rs::links_to_anything_but_web_and_email_addresses_stay_plain_text", "crates/automation/tests/it/automation.rs::links_in_xfa_rich_text_are_listed_through_tools", "crates/xfa/src/tests.rs::rounded_corners_make_a_border_one_rounded_shape", "crates/xfa/src/tests.rs::a_rounded_box_cut_by_a_page_break_keeps_its_corners_on_each_page", "crates/xfa/src/tests.rs::rounded_boxes_are_written_as_curved_paths", "crates/xfa/src/tests.rs::a_flowed_subform_is_drawn_with_its_border_under_its_content", "crates/xfa/src/tests.rs::a_check_box_sits_where_its_margins_caption_and_alignment_put_it", "crates/xfa/src/tests.rs::a_check_box_caption_without_a_reserve_takes_the_rest_of_the_field", "crates/xfa/src/tests.rs::a_radio_button_sits_where_a_check_box_would", "crates/xfa/src/tests.rs::a_check_box_caption_without_a_reserve_is_measured_as_it_is_drawn", "crates/js/src/tests.rs::message_box_keeps_its_title_icon_and_buttons", "crates/js/src/tests.rs::app_alert_in_an_xfa_script_reads_app_alerts_arguments", "crates/engine/src/tests.rs::xfa_message_boxes_keep_their_title_icon_and_buttons", "crates/xfa/src/tests.rs::signature_fields_are_named_by_their_som_path", "crates/xfa/src/tests.rs::a_signature_on_a_laid_out_box_survives_a_new_layout", "crates/xfa/src/tests.rs::the_template_knows_its_floating_fields_and_sheet_roles", "crates/engine/src/tests.rs::text_shows_the_values_scripts_give_its_floating_fields", "crates/js/src/tests.rs::the_sheet_is_the_page_on_screen", "crates/xfa/src/tests.rs::embedded_text_shows_each_instances_data", "crates/xfa/src/tests.rs::an_embedded_sheet_number_counts_the_pages", "crates/engine/src/tests.rs::floating_fields_follow_their_data_whoever_writes_it", "crates/forms/src/af/tests.rs::xfa_date_fields_keep_and_show_what_their_pattern_does_not_read", "crates/automation/tests/it/automation.rs::xfa_date_fields_keep_typed_dates_as_another_viewer_does", "crates/xfa/src/tests.rs::relevant_and_presence_say_where_fields_and_draws_show", "crates/xfa/src/tests.rs::screen_only_and_print_only_objects_are_written_with_flags_and_layers", "crates/xfa/src/tests.rs::a_master_page_started_by_a_screen_only_subform_keeps_its_own_objects_everywhere", "crates/engine/src/tests.rs::xfa_screen_only_and_print_only_objects_show_and_print_where_the_form_says", "crates/xfa/src/tests.rs::links_in_screen_only_and_print_only_text_work_where_their_text_shows", "crates/engine/src/tests.rs::xfa_enter_and_exit_scripts_run_on_every_focus_change", "crates/engine/src/tests.rs::an_exit_the_fields_change_ran_does_not_run_twice", "crates/engine/src/tests.rs::a_radio_buttons_own_focus_scripts_run", "crates/automation/tests/it/automation.rs::xfa_focus_scripts_run_through_form_focus", "crates/ui-egui/tests/it/xfa.rs::xfa_enter_and_exit_scripts_run_whenever_the_focus_moves", "crates/engine/src/tests.rs::xfa_signing_scripts_run_before_and_after_signing", "crates/automation/tests/it/automation.rs::signing_an_xfa_box_runs_its_signing_scripts_through_tools"]
-notes = "A draw placed by position turns about its anchor (rotate); fields, subforms and draws in a flow don't. Active XFA layout skips PDF-container document-script initialization for the Acrobat console/field context, so fallback-viewer scripts do not run there. Scripts remain in the file/listing; explicit console/field and XFA alerts still run. Ordinary PDF, static XFA and unlaid-out shells keep document scripts; static-conversion undo restores the XFA policy. Changed growable multiline text (no fixed h) reflows from final datasets after edits, with or without scripts; pages/widgets refresh and undo/redo, save/reopen and print retain all text. Oversized text still uses the existing read-only page-text fallback with a warning; fixed-height fields do not reflow. Repeated page-master buttons resolve their own PDF field to the shared XFA click script; the numPages-based print script requests printing from every copy, including after save/reopen (#2572). Rich-text exData/maxLength is carried into AcroForm MaxLen, reported by form_fields and enforced by form_fill (Unicode characters); limits and accepted values survive save/reopen (#2570). laid out from the template on open by the xfa crate (positioned, tb, lr-tb, table/row, page masters (a page area with no occur repeats without limit, one with occur max=1 is used once, one with occur min=1 the body never reached gets a page after the body, as Acrobat Pro does on a synthetic form), breaks, repeated header rows, borders and fills of flowed subforms (a page break between their children gives each page's part a closed border, the margins repeated at the cut, as measured on a synthetic form in another viewer, and a child's own page break breaks them the same way; one holding an item that doesn't fit on its page, cut across pages or placed past the content area's bottom, is drawn without its border, with a layout warning), captions, objects shown only on screen or only in print (relevant -print and +print, inside containers too: fields by their annotation flags, draws in optional content groups whose view and print usage say so; PdfCraft's own printing doesn't yet apply a layer's print usage, so a screen-only or print-only draw prints as it shows on screen, and a hidden object relevant prints isn't laid out), rounded and inverted border corners, rich text (its http, https and mailto links clickable), JPEG/PNG/GIF/BMP/TIFF images) into real pages and AcroForm fields (text, password, date with AFDate formats (a date one of the edit picture's patterns reads is kept in its first, and in the data as an ISO date; text none of them reads, ISO text included, is kept and shown as typed rather than refused, as another viewer keeps it on a synthetic form; a display picture that differs from the edit picture isn't used to show the date yet), check boxes and radio groups (each box placed by its field's margins, caption and paragraph alignment as measured on two synthetic forms in another viewer: with no caption at the right of the content area, beside a reserved caption where the alignment puts it, and a caption without a reserve taking the rest of the field; a check box's own margin larger than the box draws a bigger box there, which isn't copied), drop-downs and list boxes with shown/saved item pairs and multi-select, signature fields (each named by its SOM path, under a generated field for each step above it, so that another viewer, which lays the form out again, finds a signature made here, as seen on a synthetic form, and a box signed here keeps its signature, and that name, when a script lays the form out again; a box whose path, or a part of it, the file already gives another field keeps its own name, and its signature isn't found there yet), image fields showing their picture (pictures decoded once per document, at most 20 million pixels, and reused across re-layouts), buttons with reset/print/save/URL), filled from the datasets packet (including rows another viewer added), saved as an incremental revision with the values merged into the datasets so Adobe's viewers show them; usage rights the form carried (/Perms /UR3) are taken off with a note, as the layout voids them and a form with void usage rights opens with every field locked; doc_info reports xfa_layout. CLI info reports the laid-out page/field counts and dimensions while retaining the input file size and raw counts as pdf_pages/acroform_fields; text and render use those pages too, preserving copy permissions and leaving the source file unchanged (#1645). XFA JavaScript and FormCalc (form.xfa-formcalc) run in the js crate's XFA object model (xfa.form, SOM resolution, rawValue, formattedValue in a date display picture's pattern (number and text display pictures still give the raw value), presence, access, instance managers, xfa.host, xfa.layout, xfa.event): initialize and calculate on open, exit, validate and calculate after a field changes, click for buttons (through js_run and the app), enter and exit each time a field gains or loses focus, changed or not (through form_focus and the app; a radio button runs its own; an exit its change already ran is not run again, and scripts that change nothing leave no edit; exit as measured on a synthetic form in another viewer, enter from the spec and not measured), preSign as signing a box begins, so what it changes (a date, a lock) and says shows before the signer confirms and is signed too, taken back if signing ends without a signature, and postSign once signed (in the app; through sign_document when run_form_scripts asks, with every field preSign changed listed), with rows added and removed, subforms shown and hidden, and the form laid out again, all as one undo step and kept in the file. All the scripts of one event run on one thread, each in a fresh context on the form as the engine holds it then (nothing shared between scripts; the live form kept up to date in place for values, rebuilt only when the structure changed), so hundreds of calculations run within the open budget. Hostile scripts are bounded per event (merged and capped effects, messages and console lines, lower loop limits and a time budget on open and calculate, one datasets rewrite per event, print/save/links/focus from clicks only, a runaway script abandoned and the form's scripts turned off, which the app says in a toast and on the notice bar, with a button to the JavaScript console, and doc_info reports as xfa_scripts_off) and what open-time scripts changed is noted. A script that fails partway keeps what it changed before the error, as JavaScript does (forms often trip over an object an earlier version had after their first lines did the work). Missing: a page area's relevant=\"-print\" (on a synthetic form Acrobat still prints the page but leaves it blank; PdfCraft prints its content, #2574); a page break before the first section (Acrobat opens an empty body page first when the first section has breakBefore targetType=pageArea, with or without startNew, as seen on synthetic forms; PdfCraft skips a break on an empty page and lays out one page fewer, #2574); loops inside nested calls are only stopped by abandoning their thread, and script memory is not capped; a radio group's own enter and exit scripts; the change event per keystroke; a postSign script that checks its signature through event.target.getField(...).signatureValidate() fails, as event.target isn't the document yet, and a preSign script's message is a notice, where another viewer asks for an answer before it goes on; xfa.template, connections and data descriptions; a hidden instance of a repeating subform hides them all; barcodes are drawn as their text, not bars; keep rules; text is measured at the exact standard-14 widths of the face it is drawn in (bold, italic and Times included), not in the template's own typefaces, and Acrobat fidelity is eyeballed on real forms, not measured (#60). xfa.host.messageBox keeps its title, icon and buttons, and app.alert in an XFA script reads its own argument order; every message box still answers OK (1) (#4291). Text that embeds a field (a floating field, XFA 3.3 p. 1222) shows the field's value from the data, so a value an initialize, click or calculate script gives it shows, and an event that changes one lays the form out again when it ends; xfa.layout.sheet (from 0) and sheetCount treat each page as a sheet, and an embedded sheet number or count shows as the page number or count does. A repeating row shows its own instance's value, a page area's field the value written under the area, and a typed value or a reset lays the text out again. Missing: floating fields set by layout:ready scripts (current date and time), as those scripts are not run yet, and fields inside an exclusion group (#6160)."
+evidence = ["crates/xfa/src/tests.rs::a_draw_turns_counter_clockwise_about_its_anchor", "crates/xfa/src/tests.rs::layout_places_captions_fields_and_sizes_containers_to_their_content", "crates/xfa/src/tests.rs::tables_break_across_pages_and_repeat_their_header_row", "crates/xfa/src/tests.rs::rendering_into_the_pdf_replaces_the_placeholder_page_and_adds_fields", "crates/engine/src/tests.rs::dynamic_xfa_forms_are_laid_out_on_open_filled_and_saved_incrementally", "crates/automation/tests/it/automation.rs::dynamic_xfa_forms_open_render_fill_and_save_through_tools", "crates/ui-egui/tests/it/xfa.rs::a_dynamic_xfa_form_is_laid_out_and_filled", "crates/xfa/src/tests.rs::nested_width_less_subforms_lay_out_in_polynomial_time", "crates/js/src/tests.rs::instance_managers_add_remove_and_count", "crates/xfa/src/tests.rs::the_form_tree_carries_values_presence_instances_and_the_events", "crates/engine/src/tests.rs::xfa_scripts_initialize_calculate_validate_toggle_and_add_rows", "crates/engine/src/tests.rs::xfa_date_arithmetic_reads_the_date_as_its_display_picture_shows_it", "crates/automation/tests/it/automation.rs::xfa_scripts_run_for_buttons_and_field_changes_through_tools", "crates/ui-egui/tests/it/xfa.rs::xfa_buttons_run_their_scripts_in_the_app", "crates/engine/src/tests.rs::hostile_xfa_open_scripts_are_merged_capped_kept_from_printing_and_noted", "crates/engine/src/tests.rs::runaway_xfa_calculations_at_open_end_quickly_with_a_report", "crates/ui-egui/tests/it/xfa.rs::a_form_whose_scripts_were_turned_off_at_open_says_so", "crates/ui-egui/tests/it/xfa.rs::scripts_turned_off_by_a_click_bring_a_closed_notice_bar_back", "crates/automation/tests/it/automation.rs::doc_info_says_when_a_runaway_script_turned_the_forms_scripts_off", "crates/xfa/src/tests.rs::the_live_form_of_nested_repeating_subforms_stops_at_its_node_budget", "crates/xfa/src/tests.rs::data_ops_of_one_event_are_one_datasets_rewrite", "crates/xfa/src/tests.rs::choice_lists_signatures_passwords_and_pictures_become_fields_and_images", "crates/xfa/src/tests.rs::choice_values_come_from_the_data_as_saved_values_and_several_for_lists", "crates/xfa/src/tests.rs::pictures_are_sized_from_their_headers_and_hostile_ones_are_refused_unallocated", "crates/engine/src/tests.rs::xfa_choice_lists_signature_and_picture_fields_open_fill_script_and_save", "crates/xfa/src/tests.rs::repeating_subforms_inside_positioned_content_get_their_instances", "crates/engine/src/tests.rs::xfa_rows_in_areas_are_laid_out_read_calculated_and_written_where_adobe_binds_them", "crates/xfa/src/tests.rs::page_area_without_occur_serves_every_body_page", "apps/pdfcraft-cli/tests/it/xfa.rs::info_reports_the_laid_out_pages_and_fields", "apps/pdfcraft-cli/tests/it/xfa.rs::text_reads_the_layout_including_a_page_absent_from_the_placeholder", "apps/pdfcraft-cli/tests/it/xfa.rs::render_matches_the_engine_layout_on_the_second_page", "apps/pdfcraft-cli/tests/it/xfa.rs::a_laid_out_form_keeps_the_original_copy_permissions", "crates/engine/src/tests.rs::filling_growable_xfa_text_reflows_and_undo_restores_the_layout", "crates/engine/src/tests.rs::xfa_text_growth_refreshes_widget_geometry_but_fixed_height_fields_keep_their_widgets", "crates/automation/tests/it/automation.rs::growable_xfa_text_paginates_after_fill_save_and_print", "crates/engine/src/tests.rs::an_xfa_script_that_fails_partway_keeps_what_it_changed_before_the_error", "crates/engine/src/tests.rs::repeated_xfa_print_buttons_run_their_click_script", "crates/automation/tests/it/automation.rs::repeated_xfa_print_buttons_work_through_tools_and_after_reopen", "crates/xfa/src/tests.rs::rich_text_max_length_reaches_the_field_and_layout", "crates/automation/tests/it/automation.rs::xfa_rich_text_max_length_is_reported_and_enforced_through_tools", "crates/xfa/src/tests.rs::bmp_and_tiff_pictures_are_decoded_and_drawn", "crates/engine/src/tests.rs::active_xfa_does_not_run_pdf_container_scripts_but_keeps_requested_alerts", "crates/engine/src/tests.rs::active_xfa_without_template_scripts_does_not_initialize_pdf_fallback_scripts", "crates/engine/src/tests.rs::inactive_xfa_and_ordinary_pdfs_keep_document_helpers_and_alerts", "crates/automation/tests/it/automation.rs::active_xfa_skips_container_fallback_scripts_after_save_and_reopen", "crates/xfa/src/tests.rs::laying_a_form_out_takes_off_the_usage_rights_it_voids", "crates/engine/src/tests.rs::a_dynamic_xfa_form_is_saved_without_the_usage_rights_its_layout_voided", "crates/xfa/src/tests.rs::faces_measure_text_at_their_standard_14_widths", "crates/xfa/src/tests.rs::rich_text_links_keep_their_address", "crates/xfa/src/tests.rs::links_in_rich_text_become_link_annotations_one_per_line", "crates/xfa/src/tests.rs::a_links_pieces_share_one_address", "crates/xfa/src/tests.rs::a_rule_between_two_pieces_of_a_link_keeps_them_apart", "crates/xfa/src/tests.rs::links_to_anything_but_web_and_email_addresses_stay_plain_text", "crates/automation/tests/it/automation.rs::links_in_xfa_rich_text_are_listed_through_tools", "crates/xfa/src/tests.rs::rounded_corners_make_a_border_one_rounded_shape", "crates/xfa/src/tests.rs::a_rounded_box_cut_by_a_page_break_keeps_its_corners_on_each_page", "crates/xfa/src/tests.rs::rounded_boxes_are_written_as_curved_paths", "crates/xfa/src/tests.rs::a_flowed_subform_is_drawn_with_its_border_under_its_content", "crates/xfa/src/tests.rs::a_check_box_sits_where_its_margins_caption_and_alignment_put_it", "crates/xfa/src/tests.rs::a_check_box_caption_without_a_reserve_takes_the_rest_of_the_field", "crates/xfa/src/tests.rs::a_radio_button_sits_where_a_check_box_would", "crates/xfa/src/tests.rs::a_check_box_caption_without_a_reserve_is_measured_as_it_is_drawn", "crates/js/src/tests.rs::message_box_keeps_its_title_icon_and_buttons", "crates/js/src/tests.rs::app_alert_in_an_xfa_script_reads_app_alerts_arguments", "crates/engine/src/tests.rs::xfa_message_boxes_keep_their_title_icon_and_buttons", "crates/xfa/src/tests.rs::signature_fields_are_named_by_their_som_path", "crates/xfa/src/tests.rs::a_signature_on_a_laid_out_box_survives_a_new_layout", "crates/xfa/src/tests.rs::the_template_knows_its_floating_fields_and_sheet_roles", "crates/engine/src/tests.rs::text_shows_the_values_scripts_give_its_floating_fields", "crates/js/src/tests.rs::the_sheet_is_the_page_on_screen", "crates/xfa/src/tests.rs::embedded_text_shows_each_instances_data", "crates/xfa/src/tests.rs::an_embedded_sheet_number_counts_the_pages", "crates/engine/src/tests.rs::floating_fields_follow_their_data_whoever_writes_it", "crates/forms/src/af/tests.rs::xfa_date_fields_keep_and_show_what_their_pattern_does_not_read", "crates/automation/tests/it/automation.rs::xfa_date_fields_keep_typed_dates_as_another_viewer_does", "crates/xfa/src/tests.rs::relevant_and_presence_say_where_fields_and_draws_show", "crates/xfa/src/tests.rs::screen_only_and_print_only_objects_are_written_with_flags_and_layers", "crates/xfa/src/tests.rs::a_master_page_started_by_a_screen_only_subform_keeps_its_own_objects_everywhere", "crates/engine/src/tests.rs::xfa_screen_only_and_print_only_objects_show_and_print_where_the_form_says", "crates/xfa/src/tests.rs::links_in_screen_only_and_print_only_text_work_where_their_text_shows", "crates/engine/src/tests.rs::xfa_enter_and_exit_scripts_run_on_every_focus_change", "crates/engine/src/tests.rs::an_exit_the_fields_change_ran_does_not_run_twice", "crates/engine/src/tests.rs::a_radio_buttons_own_focus_scripts_run", "crates/automation/tests/it/automation.rs::xfa_focus_scripts_run_through_form_focus", "crates/ui-egui/tests/it/xfa.rs::xfa_enter_and_exit_scripts_run_whenever_the_focus_moves", "crates/engine/src/tests.rs::xfa_signing_scripts_run_before_and_after_signing", "crates/automation/tests/it/automation.rs::signing_an_xfa_box_runs_its_signing_scripts_through_tools", "crates/xfa/src/tests.rs::fields_that_must_be_filled_in_are_required"]
+notes = "A draw placed by position turns about its anchor (rotate); fields, subforms and draws in a flow don't. Active XFA layout skips PDF-container document-script initialization for the Acrobat console/field context, so fallback-viewer scripts do not run there. Scripts remain in the file/listing; explicit console/field and XFA alerts still run. Ordinary PDF, static XFA and unlaid-out shells keep document scripts; static-conversion undo restores the XFA policy. Changed growable multiline text (no fixed h) reflows from final datasets after edits, with or without scripts; pages/widgets refresh and undo/redo, save/reopen and print retain all text. Oversized text still uses the existing read-only page-text fallback with a warning; fixed-height fields do not reflow. Repeated page-master buttons resolve their own PDF field to the shared XFA click script; the numPages-based print script requests printing from every copy, including after save/reopen (#2572). Rich-text exData/maxLength is carried into AcroForm MaxLen, reported by form_fields and enforced by form_fill (Unicode characters); limits and accepted values survive save/reopen (#2570). laid out from the template on open by the xfa crate (positioned, tb, lr-tb, table/row, page masters (a page area with no occur repeats without limit, one with occur max=1 is used once, one with occur min=1 the body never reached gets a page after the body, as Acrobat Pro does on a synthetic form), breaks, repeated header rows, borders and fills of flowed subforms (a page break between their children gives each page's part a closed border, the margins repeated at the cut, as measured on a synthetic form in another viewer, and a child's own page break breaks them the same way; one holding an item that doesn't fit on its page, cut across pages or placed past the content area's bottom, is drawn without its border, with a layout warning), captions, objects shown only on screen or only in print (relevant -print and +print, inside containers too: fields by their annotation flags, draws in optional content groups whose view and print usage say so; PdfCraft's own printing doesn't yet apply a layer's print usage, so a screen-only or print-only draw prints as it shows on screen, and a hidden object relevant prints isn't laid out), rounded and inverted border corners, rich text (its http, https and mailto links clickable), JPEG/PNG/GIF/BMP/TIFF images) into real pages and AcroForm fields (text, password, date with AFDate formats (a date one of the edit picture's patterns reads is kept in its first, and in the data as an ISO date; text none of them reads, ISO text included, is kept and shown as typed rather than refused, as another viewer keeps it on a synthetic form; a display picture that differs from the edit picture isn't used to show the date yet), check boxes and radio groups (each box placed by its field's margins, caption and paragraph alignment as measured on two synthetic forms in another viewer: with no caption at the right of the content area, beside a reserved caption where the alignment puts it, and a caption without a reserve taking the rest of the field; a check box's own margin larger than the box draws a bigger box there, which isn't copied), drop-downs and list boxes with shown/saved item pairs and multi-select, signature fields (each named by its SOM path, under a generated field for each step above it, so that another viewer, which lays the form out again, finds a signature made here, as seen on a synthetic form, and a box signed here keeps its signature, and that name, when a script lays the form out again; a box whose path, or a part of it, the file already gives another field keeps its own name, and its signature isn't found there yet), image fields showing their picture (pictures decoded once per document, at most 20 million pixels, and reused across re-layouts), buttons with reset/print/save/URL; a field or exclusion group that must be filled in, validate nullTest=\"error\", is Required, so field highlighting outlines it as another viewer does on a real form; a push button, which keeps no value, is not), filled from the datasets packet (including rows another viewer added), saved as an incremental revision with the values merged into the datasets so Adobe's viewers show them; usage rights the form carried (/Perms /UR3) are taken off with a note, as the layout voids them and a form with void usage rights opens with every field locked; doc_info reports xfa_layout. CLI info reports the laid-out page/field counts and dimensions while retaining the input file size and raw counts as pdf_pages/acroform_fields; text and render use those pages too, preserving copy permissions and leaving the source file unchanged (#1645). XFA JavaScript and FormCalc (form.xfa-formcalc) run in the js crate's XFA object model (xfa.form, SOM resolution, rawValue, formattedValue in a date display picture's pattern (number and text display pictures still give the raw value), presence, access, instance managers, xfa.host, xfa.layout, xfa.event): initialize and calculate on open, exit, validate and calculate after a field changes, click for buttons (through js_run and the app), enter and exit each time a field gains or loses focus, changed or not (through form_focus and the app; a radio button runs its own; an exit its change already ran is not run again, and scripts that change nothing leave no edit; exit as measured on a synthetic form in another viewer, enter from the spec and not measured), preSign as signing a box begins, so what it changes (a date, a lock) and says shows before the signer confirms and is signed too, taken back if signing ends without a signature, and postSign once signed (in the app; through sign_document when run_form_scripts asks, with every field preSign changed listed), with rows added and removed, subforms shown and hidden, and the form laid out again, all as one undo step and kept in the file. All the scripts of one event run on one thread, each in a fresh context on the form as the engine holds it then (nothing shared between scripts; the live form kept up to date in place for values, rebuilt only when the structure changed), so hundreds of calculations run within the open budget. Hostile scripts are bounded per event (merged and capped effects, messages and console lines, lower loop limits and a time budget on open and calculate, one datasets rewrite per event, print/save/links/focus from clicks only, a runaway script abandoned and the form's scripts turned off, which the app says in a toast and on the notice bar, with a button to the JavaScript console, and doc_info reports as xfa_scripts_off) and what open-time scripts changed is noted. A script that fails partway keeps what it changed before the error, as JavaScript does (forms often trip over an object an earlier version had after their first lines did the work). Missing: a page area's relevant=\"-print\" (on a synthetic form Acrobat still prints the page but leaves it blank; PdfCraft prints its content, #2574); a page break before the first section (Acrobat opens an empty body page first when the first section has breakBefore targetType=pageArea, with or without startNew, as seen on synthetic forms; PdfCraft skips a break on an empty page and lays out one page fewer, #2574); loops inside nested calls are only stopped by abandoning their thread, and script memory is not capped; a radio group's own enter and exit scripts; the change event per keystroke; a postSign script that checks its signature through event.target.getField(...).signatureValidate() fails, as event.target isn't the document yet, and a preSign script's message is a notice, where another viewer asks for an answer before it goes on; xfa.template, connections and data descriptions; a hidden instance of a repeating subform hides them all; barcodes are drawn as their text, not bars; keep rules; text is measured at the exact standard-14 widths of the face it is drawn in (bold, italic and Times included), not in the template's own typefaces, and Acrobat fidelity is eyeballed on real forms, not measured (#60). xfa.host.messageBox keeps its title, icon and buttons, and app.alert in an XFA script reads its own argument order; every message box still answers OK (1) (#4291). Text that embeds a field (a floating field, XFA 3.3 p. 1222) shows the field's value from the data, so a value an initialize, click or calculate script gives it shows, and an event that changes one lays the form out again when it ends; xfa.layout.sheet (from 0) and sheetCount treat each page as a sheet, and an embedded sheet number or count shows as the page number or count does. A repeating row shows its own instance's value, a page area's field the value written under the area, and a typed value or a reset lays the text out again. Missing: floating fields set by layout:ready scripts (current date and time), as those scripts are not run yet, and fields inside an exclusion group (#6160)."
 
 [[feature]]
 id = "form.xfa-formcalc"