DTL DataMaster is the batch module for managing, converting and generating glyph databases and font formats. DTL DataMaster converts OpenType CFF and TTF, PostScript Type1 and TrueType fonts for Mac OS and Windows to the BE and IK formats that are internally used by the DTL FontMaster utilities. DTL DataMaster can also generate forenamed font formats. In addition, DataMaster ‘automatically’ compiles OpenType Layout features, this way providing an easy way to generate OpenType fonts, also for non-experts.
The OpenType support in DTL DataMaster is based on the latest build of the Adobe’s AFDKO version 2.5 (and syntax). Hence everything that is supported by the AFDKO, is supported by DataMaster too.
In the FM modules the encoding of the fonts is cleverly controlled via Character layout (.cha) ﬁles. For the OpenType production the Character Layout ﬁle (.cha) has two purposes: ﬁrst, it deﬁnes the glyph set which will be converted to OpenType and second, it relates the position number in the IK or BE font database to a PostScript name, which for instance is based on Adobe‘s Glyph List (AGL).
Because of the option to batch the OpenType production, a newly created entry in a feature can be applied to an unlimited number of fonts at once. Basically the FM Development Team is extending the ‘default’ features ﬁle that comes with FM as much as possible, but additions can be simply made by the user, of course, or another features ﬁle that supports the AFDKO syntax can be used. Because the ‘size’ (i.e. number of characters) in the generated font is controlled by the Character Layout ﬁle, the output of features can also be controlled by editing the .cha ﬁle.