When connected to an IDE, and with a .hsp or .hsw project open in Workspace (i.e. not a repository project), you are effectively working in "source edit" mode. This lets you keep track of incremental changes as you edit code, and even determine changes between commits.

You will notice 3 new buttons appear on the Workspace toolbar:

These are (left to right):

If you change code in a file (remember to rebuild the file), you can click on "Incremental Refresh" to perform a quick update. Just the changed files are re-parsed, and any structural changes are shown in the Structure Map - new items and dependencies are shown in dark purple, and lighter purple indicates partly new (i.e. "contain" new items/dependencies). Click on "Clear newness" to remove the purple/new indication.