Depending on which program section you are currently in, the following key assignments apply.

Drawing window

Function	Key
Select element	Click left mouse key
Change the visible section	Click middle mouse key
Zoom in view	Scroll mouse wheel

Menu bar / Toolbar

Function	Key
Invoke function	Click left mouse key

Project list / Characteristics list

Function	Key
Select element	Click left mouse key
Open context menu	Click right mouse key
Edit element	Double-click left mouse key
Scroll through list	Scroll mouse wheel

The following functions apply for all windows where a selection can be made.

Function	Keys / keyboard shortcuts
Select an element	Left-click
Add or delete an element for selection	Control + left-click
Add or delete several elements for selection	Shift key + left-click
Select all	Control + A