Newbie question, commenting out an element

I am new to the list and to XSLT. I want to transform a XML file to
another XML file. In the process I have a Applic tag that I want to
wrap in a comment.

I cannot get anything to work with version 1 or 2. I have played and
learned a lot of things, but not how to get this to work.

sample, something like this.

<applic><assert></assert></
applic>

to

<!-- <applic><assert></assert></applic> -->

Any love, please, This seems that it would be so simple, but I was not
able to find how to do it.

d