Marisa -- The overprinting of headers when you set .T_MARGIN to .25i without subsequently adjusting the .HEADER_MARGIN and .HEADER_GAP is the expected behaviour. From the momdocs:
"However, if you invoke T_MARGIN or B_MARGIN either before or after START, they set the top and bottom margins of running text irrespective of HEADER_GAP and FOOTER_GAP." ^^^^^^^^^^^^ Running text, as defined in the momdocs, is the body of your document *excluding* marginalia (headers, footers, marginalia, line numbering, etc.). If, as I assume, you want your headers to be at the .25i mark, you need to tell mom that's where you want them, along with the gap you want between headers and the start of running text, e.g. .HEADER_MARGIN .25i .HEADER_GAP .5i will place your headers at .25i, with running text starting .5i lower. If you prefer, you can do .HEADER_MARGIN .25i .T_MARGIN .75i which sets your headers at .25i, with running text beginning at .75i from the top of the page. It is exactly equivalent to doing .HEADER_MARGIN .25i .HEADER_GAP .5i so the choice is up to you. The momdocs are very complete and well organized, but if you're new to mom, it's perfectly understandable that you didn't see this. The pertinent section is in the html doc file headfootpage.html#vertical-spacing -- Peter Schaffter http://www.schaffter.ca
