To restate, there are Isilo documents created by IsiloX from news web sites that use mainly the "Standard" font on my PDA.
Part of the problem here is that the word "standard" is being used for two or three different things. By "standard" I mean the font name in the left in FontHack123, for example:'
HRstandard > OS5 (0)
is something we both use in FontHack123.
If I change:
Standard > none
to some other font, then the font appearing in the Isilo document created by IsiloX is no longer too thin, but then the menus are messed up.
(If I use relative->Large, then some documents that are otherwise fine, then have too big a font size.)
What may be confusing you is that iSilo is using 8 fonts - tiny,small,standard,large -
and the bold versions of each. Your mapping of the OS5 (which I also use) only covers 4 fonts.
Also note the terms "tiny,small,standard,large" are terms that are not used by FontHack123, and one has to experiment to find which 8 fonts are being used by iSilo (in terms of FontHack123's font names).
Here is a web page to convert in iSiloX so that you can see what I mean:
http://www.techbargains.com/pocket/index.cfm