Frame
This command enables creating a frame starting from the same frame section and a guide path. To begin with, the guide path must be chosen, then the section path. Last thing one point on the section must be selected where the guide line is to pass.
For creating some frames in Z just draw the guide line and the plane section, then the guide must be acknowledged as being in Z by ticking the button 
.
For instance…
First draw the guide line of the frame...
Picture 133
Then draw the frame section …
Picture 134
After starting the frame command define the Guide Line and the Section, choose one point of the section that will follow the Guide Line path and the frame is obtained…
Picture 135
On changing the guide-section point, also the surface that is obtained will change; therefore the preview that the program displays during the point selection is very useful. Besides it is possible to establish to invert the guide line 
; this way the location of the application point along the guide line is specified (whether at the start or by inverting at the end); by inverting the guide the end point becomes the start point; also in this case the preview displayed by the program is particularly useful.
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