In addition to FAQ we could also have Common error section which will
have, well common errors. Few examples are: creating bitmap before
loading (memory leak), semicolon at END_OF_MAIN (warnings), calling
set_color_depth without set_gfx_mode after (bitmaps if one depth and
screen of other, using variables to store bitmap size (most new people
doesn't know about ->w and ->h), creating bitmaps in global
objects ctor/ dtor (crash) and others.