The comment tag lets you document your DTML with comments. You can also use it to temporarily disable DTML tags by commenting them out.
comment tag syntax:
comment tag is a block tag. The contents of the block are
not executed, nor are they inserted into the DTML output.
<dtml-comment> This content is not executed and does not appear in the output. </dtml-comment>
Commenting out DTML:
<dtml-comment> This DTML is disabled and will not be executed. <dtml-call someMethod> </dtml-comment>