In cases where there are duplicated file names, e.g. TclLib/Object.htm and ITclLib/Object.htm, the wrong title tag gets generated for html page. For example,
Generate the documentation from source. Look at the <title> tag in the files html/TclLib/Object.htm and html/ItclLib/Object.htm. Notice that they are both identical -ie. in my case the TclLib/Object.htm file had the title for the Itcl Object man page.
This results in the wrong title being displayed when viewed in a browser. More irksome, generating a MS .CHM file results in the Table of Contents showing the wrong text.
Observed on Windows though it's probably platform-independent.