Removes unused named objects, such as block definitions and layers, from the drawing using the command line.
Removes unused named objects from a drawing at the Command prompt. You can only remove one level of reference at a time. Repeat the command until there are no unreferenced, named objects.
The following prompts are displayed.
Type of Unused Objects to Purge
You can specify what types of named objects that you want to remove, including blocks, detail view styles, dimension styles, groups, layers, linetypes, materials, multileader styles, plot styles, shapes, text styles, multiline styles, section view styles, table styles, visual styles, registered applications, zero-length geometry, empty text objects, and obsolete DGN linestyle data (orphaned data), or all of these.