docs: record how Acrobat prints a page area that is not relevant for print (#2574)

Observed in Acrobat Pro on the public ISCIII form: the once-only page keeps
its place when printing (7 pages with nothing typed) but is printed blank.
PdfCraft draws its content, and has no relevant attribute or print-off
layer yet; the note says so.

ROADMAP.md

@@ -159,7 +159,7 @@ Ranked; detail and the full milestone table in [docs/roadmap.md](docs/roadmap.md
 ## Progress log
 - **2026-10-15 (M2, gap 12):** `cargo xtask text-oracle` scores reading order as well as word F1: the longest common subsequence of the two word sequences over the longer one. F1 is a bag of words and cannot see order at all -- measuring #2431, a change that moves text and nothing else, it called 26 of the 29 files whose output changed identical, where the order score separated 18 improvements from 6 regressions. Reports, does not gate; a disagreement with Poppler, not a verdict. Estimates unchanged.
 - **2026-10-15 (M2, #2305 follow-up):** WinAnsiEncoding 0xA0 and 0xAD and MacRomanEncoding 0xCA extract as the ordinary space and hyphen Annex D.2 names them, in the vendored hayro tables (patch 30) as well as `crates/fonts`, so search, copy and redaction see characters that were hidden behind U+00A0 and U+00AD. Across the pdf.js corpus the soft hyphens we extract fall 117 to 13 and the non-breaking spaces 30 to 26; the rest come from `/ToUnicode`. An explicit `/Differences` name keeps its glyph list value, as pdftotext does. Estimates unchanged.
-- **2026-10-15 (M12, XFA, #2574):** A `pageArea` with no `<occur>` repeats without limit instead of taking a subform's default of one use, so a later page area with `occur max="1"` is no longer drawn (with a copy of its fields) over every body page. A page area's `occur min` is honoured too: one the body never reached gets the pages it still needs after the body (the once-only closing page of the public ISCIII form, with its button, is page 7 of 7). Acrobat Pro shows the form as 7 pages with that page last, as here; how `relevant="-print"` treats it when printing is still unchecked. Synthetic regression tests. Estimates unchanged.
+- **2026-10-15 (M12, XFA, #2574):** A `pageArea` with no `<occur>` repeats without limit instead of taking a subform's default of one use, so a later page area with `occur max="1"` is no longer drawn (with a copy of its fields) over every body page. A page area's `occur min` is honoured too: one the body never reached gets the pages it still needs after the body (the once-only closing page of the public ISCIII form, with its button, is page 7 of 7). Acrobat Pro shows the form as 7 pages with that page last, as here; when printing, Acrobat keeps that page but leaves it blank (`relevant="-print"` on the page area), which PdfCraft does not do yet. Synthetic regression tests. Estimates unchanged.
 - **2026-10-13 (community, M3, #1569 review):** Pixel-only Wayland wheel, wheel-tilt and continuous input use standalone moved events, so Ctrl zoom does not remain latched after the modifier is released (#991); vendored winit patch (13), with a policy test. Estimates unchanged.
 - **2026-10-12 (M6):** XFDF field import and data-file extraction join all text nodes in a value, preserving text after XML comments and processing instructions. Synthetic regressions cover Unicode, CDATA, empty values and PDF save/reopen. Estimates unchanged.
 - **2026-10-12 (M7, picture right-click menu):** The Edit text & images menu of a picture gains Cut Image, Redact Image (a redaction mark over the picture, applied from Redact a PDF), Create Link… and Recognize Text… (for that page), in all 21 catalogs. The menu was drawn only while the pointer was over the picture, so its items outside the picture (most of a logo's menu, and Delete below a page) could not be clicked; an open menu now stays drawn. Still missing from Acrobat's menu: Arrange (bring to front, send backward), Remove crop, Draw freehand and Edit image using… (opening an external editor).

parity/acrobat-features.toml

@@ -5221,7 +5221,7 @@ status = "partial"
 commands = ["file.open"]
 tools = ["doc_open", "doc_info", "form_fields", "form_fill", "js_run"]
 evidence = ["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/automation.rs::dynamic_xfa_forms_open_render_fill_and_save_through_tools", "crates/ui-egui/tests/ui_group/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/automation/tests/automation.rs::xfa_scripts_run_for_buttons_and_field_changes_through_tools", "crates/ui-egui/tests/ui_group/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/ui_group/xfa.rs::a_form_whose_scripts_were_turned_off_at_open_says_so", "crates/ui-egui/tests/ui_group/xfa.rs::scripts_turned_off_by_a_click_bring_a_closed_notice_bar_back", "crates/automation/tests/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"]
-notes = "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 shows the public ISCIII form), breaks, repeated header rows, captions, rich text, JPEG/PNG/GIF images) into real pages and AcroForm fields (text, password, date with AFDate formats, check boxes, radio groups, drop-downs and list boxes with shown/saved item pairs and multi-select, signature fields, 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; doc_info reports xfa_layout. XFA JavaScript and FormCalc (form.xfa-formcalc) run in the js crate's XFA object model (xfa.form, SOM resolution, rawValue, 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), 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. Missing: the master's relevant=\"-print\" (how Acrobat prints a page area marked not relevant for print is unchecked, #2574); loops inside nested calls are only stopped by abandoning their thread, and script memory is not capped; the change event per keystroke; 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; metrics are approximate and Acrobat fidelity is eyeballed on real forms, not measured (#60)"
+notes = "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 shows the public ISCIII form), breaks, repeated header rows, captions, rich text, JPEG/PNG/GIF images) into real pages and AcroForm fields (text, password, date with AFDate formats, check boxes, radio groups, drop-downs and list boxes with shown/saved item pairs and multi-select, signature fields, 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; doc_info reports xfa_layout. XFA JavaScript and FormCalc (form.xfa-formcalc) run in the js crate's XFA object model (xfa.form, SOM resolution, rawValue, 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), 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. Missing: a page area's relevant=\"-print\" (Acrobat still prints the page but leaves it blank; PdfCraft prints its content, #2574); loops inside nested calls are only stopped by abandoning their thread, and script memory is not capped; the change event per keystroke; 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; metrics are approximate and Acrobat fidelity is eyeballed on real forms, not measured (#60)"
 
 [[feature]]
 id = "form.xfa-formcalc"