You might look into making your own .fmt file. I haven't used it myself, but you could take a look at David David Carlisle's 'mylatex.ltx' (https://github.com/davidcarlisle/dpctex/blob/master/carlisle/mylatex.ltx). It seems relatively straightforward and has considerable documentation in it. Additionally: https://tex.stackexchange.com/questions/269048/help-for-using-mylatex-or-mylatexformat
SGM > On Jul 3, 2020, at 2:16 PM, Michael Maxwell <mmaxw...@umd.edu> wrote: > > I've noticed (and you probably have too) that a good proportion--maybe half, > for a 30 or so page document--of the runtime for a xelatex document is > startup: reading the style files. Since I re-use the same style files for > most papers, I seldom have a mistake in those, so it seems a waste to re-run > them every time I want a PDF of a new version of my doc (or every time xetex > finds a mistake in my doc). Is there no way to save the results of loading > that, so that it could be re-loaded more quickly next time? > -- > Mike Maxwell > "I may not remember, but I never forget." > --Social Crimes, Jane Stanton Hitchcock