The mouse pointer has a key symbol whenever Presentation Mode is active. It can be terminated by hitting Esc or Shift + Esc.Once editing of objects has been finished and the objects are synchronized, it may be useful to protect them from unintentional editing or shifting by locking them.
Right-click the corresponding object and select Status - Locked. If you want to lock several objects you need to mark them.... See Marking objects. Locked objects can be recognized by the key symbol.
The same way objects can be unlocked.
The mouse pointer has a key symbol whenever Presentation Mode is active. It can be terminated by hitting Esc or Shift + Esc.