Identifying drawings
The browser's ability to identify drawing determines the way how drawings are shown to the user.
The identification of a drawing is based on it's UUID, a unique identifier that sticks to the drawing for its entire life.
There are, however, two situations in which a drawing's UUID is changed:
By changing the unit of length for a drawing, which invalidates the settings (mostly position-based), such as text insert points.
By deciding not to update a drawing during CAD import. If the setting Update CAD Integrator FM drawing in the import definition is set to No, a new UUID will be created.
* 
Most existing drawings currently do not have a UUID. When opening these drawings in Planon now, these drawings will automatically get a UUID and their settings are converted to the new UUID based settings.
You can save the drawing preferences as default (CAD Integrator menu), but note that there is only one default setting. (In contrast, all individual settings of the user are saved).
The viewer stores the history of text point changes. Use CTRL+Z to go back or CTRL-Y to go forward. (History is only available during the open viewer session.)