Add File Name to Output

Is it possbile to add the file name variable to topics after they are created without having to manually insert the variable?

Upon inserting the variable, format is thus:

<variable name=file x-format=default x-value=0001.htm>0001.htm</variable>

The x-value and text are plugged in automagically upon insertion.

Is there a simple variable code that will pulls these values in?

My ultimate need is to be able to print topics and include the file name. I could use Title just as well.

A report would work, if the report included the topic text.