>
> So the this works unless you have 2 images on the same page, because as 
> the last one will always be on top. I thought maybe I could make the image 
> a label for the button and a radio, but that doesn't seem to work. I need 
> some way to keep track of which image is 'active'. Any suggestions?


the button trick works for whatever is nested in it so if the 2nd image is 
a separate tiddler it will replace any previous separate images with the 
css positioning you're using...

you could embedded an entire tiddler's content in a button which would be 
tricky with formatting or use a button by itself *(nothing nested inside 
it) and it will make whatever tiddlers you have open be in full screen

there is some vagueness in what you're doing-- are these multiple images 
separate tiddlers or in the same tiddler?

the button code I provided I use as a button with nothing nested inside 
with additional actions which closes the tiddler containing the button, 
opening a new tiddler with mixed content (multiple images and text) I want 
in full screen-- I didn't have to adjust any positioning other than setting 
the tiddler title, subtitle, tags to display:none and tc frame padding set 
to 0 (set by a stylesheet for the tiddler and not needing to be invoked 
when displayed in full screen),  I also did have sidebar set to be hidden,


full screen mode is a widget message for the action witdget that the 
button/radio button/checkbox widgets use
https://tiddlywiki.com/#Messages
to escape fullscreen with a button use "exit" for the parameter
https://tiddlywiki.com/#WidgetMessage%3A%20tm-full-screen

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