Comments are human-readable bits of text added to a manuscript that are ignored by book reading software. They can be used for instructions, notes to self, or just to highlight different bits of the text to help keep you right.
There are two types, single line comments and multi-line comments.
Single line comments
Used to add a quick comment or note. Cannot span more than one line and can be added just about anywhere using two slashes.
* Get milk
* Pick up kidz // Is this a mistake?
* Buy more milk
For use when something substantial has to be added. They work in a similar way to single line comments. Just add another slash.
This is a comment
Spread over many lines
And it needs the three slashes to open and close it
To escape a special tag and render it literally use a backslash (\).
That dollar sign would be displayed, not interpreted.