3 The format file and fonts The TeXpider should normally be used with the lt209w/latexw format files, or similarly built formats. In this section we'll explain what lt209w/latexw are; this information will be of assistance if you desire to build a different format.
Since the TeXpider output may be used on computers that do not have VTEX running (in fact, the HTML output can be used on non-Windows computers), you should restrict yourself to the fonts that will definitly be present. This means: Times, Helvetica, and Courier. The lt209w format is essentially LATEX2.09, except for usage of these common fonts. If you prefer LATEX2E, the format to use is called latexw. Notice that if you are absolutely sure that your output will be used only on computers where some other preferred fonts are always present, you can build another format using these preferred fonts. These font assignments are done in the wintier.tex source file. This restriction applies to the text fonts only. Since the TeXpider renders all math into graphics files, the math fonts should stay conventional TEX fonts (These font assignments are done in the expfonts.sty file.). Thus, in lt209w the \rm command will invoke Times Roman in text mode, but the Computer Modern roman in math mode.
This has been set up with LATEX2E with the NFSS; under LATEX2.09 we used the MicroPress \aliasfont extension. However, the 2E compatibility mode (which is used under 2E for the documents that start with \documentstyle) does not really support NFSS and we did not want to ``hack our way through'' or modify the 2E sources.
Thus, if you document indeed starts with \documentstyle, you should either
Compile it under 2.09
Change the command to \documentclass and compile it under 2E
Compile it under 2E as is and live with the less-than-good results (use of Times in math will result in very low quality).