The top object is the layout itself. It uses a set of symbols
that resides at the first logical level. Each symbol is uniquely identified
by a seven bit ASCII
code. All layout objects share the same set of
symbols. These symbols are used to form text objects on the silkscreen
and copper layers. Undefined symbols are drawn as filled rectangles.
Every font file is preprocessed by a user-defined command when it is loaded.
For details see fontCommand
, Resources.