Set to true (in a synchronous handler) to discard the commit.
The committed content: Text (sticky/text), Label (shape), Markdown or Html source.
The target item's ID.
The target item's kind (decides which field the content lands in).
OptionalTitleHTML widgets only: the committed header title ('' clears it).
BEFORE-event args for the board/host
ContentApplyingoutput — raised when an in-board editor commit (inline sticky/text/shape edit, or the markdown/HTML rich editor's Apply/Done) is about to write the draft into the state engine. Handlers run synchronously; set Cancel totrueto discard the commit (the item keeps its previous content andContentAppliednever fires). Handlers may also rewrite Content / Title — the edited values are what gets applied.