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The Type 1 and CID drivers
It is possible to control the behaviour of FreeType's Type 1 and Type 1 CID drivers with
Behind the scenes, both drivers use the Adobe CFF engine for hinting; however, the used properties must be specified separately.
The Type 1 driver's module name is ‘type1’; the CID driver's module name is ‘t1cid’.
Available properties are
random-seed, as documented in the ‘Driver properties’ section.
Please see the ‘The CFF driver’ section for more details on the new hinting engine.