Where can I find this command?
The Purge command deletes unused block definitions, groups, layers, hatch patterns, dimension styles, linetypes, and materials from the model.
Options
BlockDefinitions
Purges unused block definitions.
DimStyles
Purges unused dimension styles.
Groups
Purges unused groups.
HatchPatterns
Purges unused hatch patterns.
Layers
Purges unused layers.
Linetypes
Purges unused linetypes.
Materials
Purges unused materials
See also
Work with blocks, groups, and worksessions
Rhinoceros 5 © 2010-2015 Robert McNeel & Associates. 17-Sep-2015
