DoorMaster User Guide
To locate information about any menu commands, 
click on the area of interest on image above.
Be aware that this discussion primarily applies to door properties in Floating mode. When docked, the Preview pane is positioned vertically under the door options.
The preview pane consists of three major areas:
The Machining view option allows you to select individual sections using a drop list. The selected section is displayed along with a status bar - see example.
Example : View Machining and Status Bar
The Machining view option allows you to select individual sections using a drop list. The status bar provides information about the currently selected machine step or click point which is indicated by a green dot (see image example 2 below).
In example 2, the status bar states that the click point is on Vertex #1 with XY coords [66.6mm:50mm] which is the height of the border. The dimensions shown here were added in Machining Editor mode. Note that the required tool (i.e. dimension or tape measure) is turned on by clicking the required tool while in Current Editor mode.
View Machining in 3D: Displays machining in 3D OpenGL view.
The 'G Double Curve' has been used here to show each view selection.
Moves the camera position back to its original position and angle. This is useful if you lose the image by accidentally moving it out of the view window.