How to restore DraftSight to default settings on an Apple Mac computer?
  1. Make sure that DraftSight is not running.
  2. Navigate to location:  /Users/ [USERNAME]/Library/Preferences and rename the folder "DraftSight" to "DraftSight_old".
  3. Restart DraftSight.

When DraftSight starts, new user settings will be created.

If you cannot locate the 'Preferences' folder, it might be hidden. To show the folder press keys Command+Shift+> on the location panel. 

A full description of this process is available in the DraftSight Community in this Wiki post:

https://r1132100503382-eu1-3dswym.3dexperience.3ds.com/#community:51/wiki:NkZj9uaxScK535Q3PxyzoQ

If the link does not direct you to the post, copy and paste the link into your web-browser address bar.