There is no undo in this build
ZeroCount currently has no undo and no redo. There are no undo or redo buttons in the toolbar, and CTRL+Z and CTRL+Y do nothing. Every change you make to a takeoff takes effect immediately and stays.
This is worth knowing before you start deleting things rather than after.
Working safely without it
Take the confirmations at their word. Every group delete asks first and says "This action cannot be undone." That sentence is accurate. Read the group name in the dialog before you confirm.
Deleting markers does not ask at all. DEL removes everything currently selected, with no prompt. Check what is selected first, especially after a rubber-band drag.
Hide instead of deleting. If a group is in your way rather than wrong, cover or hide it. Nothing is lost and you can bring it back in two clicks.
Duplicate the project before a big change. Before restructuring a takeoff, merging a lot of groups or clearing a drawing down, duplicate the project. It is the only real safety net available.
Treat Reset Drawing as final. It removes every marker, service, zone, area of interest and ignored colour on that drawing and returns it to how it was uploaded.
Next steps
- Duplicating a project — taking a copy before you restructure anything.
- Group visibility — hiding a group instead of deleting it.
- Resetting a drawing — what Reset Drawing removes, and what survives it.
- Managing groups — the delete confirmations, in full, for each group type.