1 Provides a BitmapDevice: the vcl software renderer
3 Provides algorithms and data types for bitmap graphics
4 e.g. line and fill polygon scan conversion, bitmap format iterators, and a SalGraphics-compatible software renderer
6 Used for example for wmf / svm files.
7 E.g. used when you do -headless, and have no DISPLAY set - it's an all-software backend for the LibO graphic backend. also see [git:vcl/headless].