At the right side of the Document toolbar the Operation mode button is placed. This is a permanent function button with one can easily switch between the different operation modes that are available in the software.
The operation mode determines the context in which the user is working in the 3D View. It enables certain overall selection filters with corresponding functionality and command bars that are independent from the current active workbench.
Clicking on the command icon will open a top down menu with all available Operation modes. Selecting one from that menu will set it active.
