find-next-selected-snip in pasteboard%

Returns a selected snip in the editor.

• (send a-pasteboard find-next-selected-snip start) -> snip% object or #f
   start : snip% object or #f

  Returns the next selected snip in the editor, starting the search after start. (See Basic Organization for information about snip order in pasteboards.) If start is #f, then the search starts with the first snip in the editor (and thus returns the first selected snip, if any are selected). If no more selected snips are available, or if start is not in the pasteboard, #f is returned.