Historical notes about TeX fonts, standard TeX bitmap fonts source codes structure
Comparision of METAFONT and METAPOST
How the assignment and equation using linear dependences differ
Language nonprocedurality - for cycles inside a single statement
Definitions with typed arguments - subroutine replacement
Example of "subroutine" converting 2D 3D coordinates, where "conversion direction" depends on which coordinates are known
Working with bitmaps (inner representation), hachuring techniques in METAFONT, comparing with METAPOST
Programs for ligatures and kernings (TFM)
Including texts in drawings (cooperation of METAPOST and TeX)
Comparing methods incorporating pictures in TeX and pdfTeX
We describe the METAFONT/METAPOST language and its philosophy.