2. Opening fonts
If you’d like to store the low-level TT hinting when opening a TrueType-flavored font, make sure the Preferences setting
Opening OpenType & TrueType / TrueType/OpenType TT (.ttf) / Store TrueType native hinting is enabled. If disabled, the TrueType assembly instructions will not be read from the font. If enabled, they will be read, stored in the .vfb document and written back into a new generated .ttf font — but only for the glyphs which have not been modified within FLS.
A brown “
T” mark in the lower-right corner of a glyph cell indicates that low-level TT hints are present in the glyph (either read from the original TrueType-flavored font, or generated using FontLab Studio’s TrueType Hinting tool).
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When opening PostScript-flavored fonts, their hinting is always read from the font and stored in the .vfb document.