aman wrote

It can be quite hard to unlearn what you have used for decades. At the top of the main page are links to manuals and howtos, and I can recommend LibreCad for Dummies, it is not the actual for Dummies series, you can download it for free, just use google or what ever search engine you use.

The trim command was a bit unintuitive also for me at first, but I have used to it, since I only use LibreCad nowadays, and to edit, i would first select the item(s) I need to edit, then choose command from the edit-menu or from the left panel.

Also the draft mode has caused some confusion, check that it is not in use: View-menu.