Posters reload themselves:
- when the map view is laid out
- when the poster is selected
- when a note scrolls into view.
- Posters loading via $PosterURL update if $PosterCSS is changed
Thus, changes to the poster’s data might not be reflected immediately.
The action changed(), allows the designated note—default is the current note—to update itself, allowing a stamp to call the poster to update itself. That is useful if some calculation needs to be done before the poster is displayed.
Changing the $PosterURL or the $PosterTemplate of a poster immediately redraws the poster.
See also—notes linking to here: