What keyboard shortcuts are available in DSM?

See pre-defined shortcuts here within the help documentation:

http://help.spaceclaim.com/dsm/5.0/en/Content/SpaceClaim_shortcuts.htm

With DSM v5.0 and newer, you can even define custom shortcut keys for any command/tool:

https://designspark.zendesk.com/hc/en-us/articles/212078089