A password must be given to save a comment. You choose the password, and it can be used to edit the comment later.
All markup in performed using square brackets. e.g.
[bold text] ---> text
[link http://www.google.com] ---> http://www.google.com
[link [url http://no.where] black hole] ---> black hole
[mono filename] ---> filename
See _manual for more details.
