Callie, Are any of your missing filename changes in the same topic?
When eP scans each Frame/Word source page, it uses the filename marker to rename the page. But, if further down the same Topic page it finds another filename marker, it renames the html file to use that marker. The net result is that the first filename marker is ignored. If this is the case, you have two major choices: Use the page break settings to break up the topic so that each filename marker is on a separate page (as advised by Franz-Josef). Or use TopicAlias markers (and a different method of calling the pages in the parent application). It is probably too late now to consider the latter, but in the long term you will get far better results with that method. I don't know your output format, but in WebWorks Help 5, using TopicAliases generates a Topics.js file which developers can hook into to map between their application calls and the file name and POSITION of the marker on each page: function WWHBookData_MatchTopic(P) { var C=null; if(P=="abt_central")C="abt_central.htm#999244"; if(P=="Mail_Merge")C="How_to_create_a_mail_merge.htm#6316358"; if(P=="How_to_create_a_mail_merge")C="How_to_create_a_mail_merge.htm#6316409"; BTW, when Paul Mueller dries out his PCs in Houston, the new eP doco will contain FAR better descriptions of how to use Filename and TopicAlias markers than anything that has gone before (and certainly much better than anything I can come up with :). jjj