\startcomment ... \stopcomment
The instances of \startcomment ... \stopcomment create PDF comments: little balloon or text icons that one can click to reveal the comment.
|\startcomment ... \stopcomment|
Create PDF comments: little balloon or text icons that one can click to reveal the comment. If there is no text around the place the command is invoked, one needs to add \dontleavehmode before \startcomment (or before \comment).
There is also a command form of this environment: comment.
This is a text. \startcomment[hello] [symbol=Balloon, % can be omitted for the default 'note-pinned-to-something' icon color=red, % colour of the background of the note icon width=4cm, % dimensions of the textbox height=3cm] hello \leftguillemot\ \'e\'erste \rightguillemot\ test beautiful world \stopcomment