[Auto] [Update] Document Select All in events, Layer behavior property, and cross-scene object preload

[github-actions]

This PR was automatically generated by the Update docs from GDevelop commits workflow.

An AI coding agent analysed recent commits in 4ian/GDevelop
and updated the documentation to reflect user-facing changes.

GDevelop commits covered

a987d2c4b [Auto PR] Update translations (#8601)
5aed979a0 Fix regression when dragging events on iOS touch devices (#8616)
374a5670c No longer use bold for objects inside expressions (#8618)
39991b7fc Remove a useless message wrongly displayed when updating an extension without any dependencies (#8617)
ae3e4e6ed Fix a regression on "edit or add variable" allowing to add variable with an empty name (#8614)
bd054aa49 Fix operator color in conditions (#8613)
17ace4e36 Display boolean parameters in pink (#8612)
830587f25 Fix object parameter color in expression (#8611)
032b93f0e Fix copied events to keep the same order when pasted (#8610)
cea1410fb Add syntax highlighting for expressions in events (#8538)
391caaddf Add internal hints for objects without known width/height (#8608)
d9d8a7d3e Fix a regression on the displayed position of custom objects (#8604)
c8d5f4600 Add a button in the extension editor to select behaviors with the dialog (#8602)
f9d1d4c60 Fix and show the button to add parameters to "action with operator" functions as disabled (#8603)
d81a6899d Allow to create variables from autocompletion in more cases (#8583)
cacd28eed Add a "layer" property type for custom behaviors (#8596)
e2de84627 Allow to load and unload objects from other scenes (#8592)
584cca2d4 Export classes in ResourceLoader for better TypeScript compatibility (#8594)
0b3f8e720 Improve types for TypeScript 6 (#8591)
4bb652f5e Fix Ai Panel not aligned to the top properly on mobile + improve games search to be more relevant (#8590)
f60562eae [Auto PR] Update translations (#8585)
1c17c895b Allow custom objects to move layer cameras (#8572)
651c93ae1 Add "Select All" in Events Sheet and ability to deselect an event when doing a multi-selection (#8578)
0eb6014a9 Fix some visual glitches in the Events Sheet when opening and scrolling (#8571)

The AI agent summary is:

Summary of documentation changes:

• all-features/resources-loading/index.md — noted the new optional Object scene parameter on the Preload/Unload object actions and the Object preloaded condition, so objects from other scenes can be targeted.
• behaviors/events-based-behaviors/index.md — added the new Layer property type available for custom behaviors.
• interface/events-editor/index.md — added a short "Select multiple events" section covering Ctrl/Cmd-click to add or remove from a selection, plus the new Select All / Deselect All shortcuts.

Please review the changes carefully before merging.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
gdevelop-wiki	Ready	Preview, Comment	May 20, 2026 9:25am