From: <[EMAIL PROTECTED]> > Please see > http://www.microsoft.com/typography/otspec/recom.htm > ... the section about "Shape of .notdef glyph"
Thanks for pointing a Microsoft recommandation for the undefined glyph (glyph id=0) that every TT font should implement (so this would affect also OT fonts). But there are several fonts in Windows and Office that still display a normal question mark for this glyph ID, instead of a narrow white box as expected (this may be a caveat within the system compatibility font mappings with system fonts which are not TrueType but simple .FON bitmap fonts)...
