The glyph stack tracks char code, presence of d0/d1 op, caching flag, cache & tag, bitmap, Splash object, & a couple CTM doubles.
The Transparency Group linked-list tracks x/y offset coordinates, a couple bitmaps, colour space, isolated flag, knockout flag & coordinate, font anti-alias flag, & original bitmap/Splash objects.
2.5/2.5 Fin for today! Tomorrow: page-rendering method; followed by Splash vector graphics then Goo JS engine!
alcinnz