Editing TrueType (section)

=== Collection ===
TrueType Collection (TTC) is an extension of TrueType format that allows combining multiple fonts into a single file, creating substantial space savings for a collection of fonts with many glyphs in common. They were first available in Chinese, Japanese, and Korean versions of Windows, and supported for all regions in Windows 2000 and later. Classic Mac OS included support of TTC starting with [[Mac OS 8]].5.

A TrueType Collection file begins with a <code>ttcf</code> table that allows access to the fonts within the collection by pointing to individual headers for each included font. The fonts within a collection share the same glyph-outline table, though each font can refer to subsets within those outlines in its own manner, through its <code>cmap</code>, <code>name</code> and <code>loca</code> tables. Collection files bear a <code>.ttc</code> filename extension. In classic Mac OS and macOS, TTC has file type <code>ttcf</code>.