prep: Control Value Program table

The prep table is an OpenType table.

class fontTools.ttLib.tables._p_r_e_p.table__p_r_e_p(tag=None)[source]

Bases: table__f_p_g_m

Control Value Program table

The prep table contains TrueType instructions that can makee font-wide alterations to the Control Value Table. It may potentially be executed before any glyph is processed.

See also https://learn.microsoft.com/en-us/typography/opentype/spec/prep

mergeMap(lst)