The trim command in the latest version of DraftSight has an error that makes it much less usable. If you click directly on each individual object you want to have trimmed, the command completes successfully, but if you click and drag across an object, the command fails.

Screenshots attached and command text below.  

TRIM

[ENTER]

Active settings: Projection=CCS, Edge=None

Specify cutting edges

[ENTER]

Options: Enter to specify all entities or
Specify cutting edges»

[ENTER]

Options: Crossing, CRossline, Project, Edge, eRase, Undo, Fence, Shift + select to extend or
Specify segments to remove»

[Click and drag]

Specify opposite corner»

«Error»