SETWZ                                                              Menu: WALLS
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Sets the active width and height for subsequently created walls.

        1. (NUM) width of wall (l/r)
        2. (NUM) height of wall (z1,z2)

Description:
This command sets the width and height of walls. The width is given by two
values indicating the distance of the two wall faces from the wall-axis. They
should be given for the left (`l') face and right (`r') face respectively,
relative to the direction of the wall (from starting point). A negative value
will create a face to the left of the axial line, and a positive value will
create a face to the right. (The first width is usually negative and the
second positive.) The two heights (z1 and z2) are the heights above the
starting and the end points respectively. Any wall subsequently created or
modified will have these predefined dimensions. Walls may have a constant
height, or vary their height from the start to the end points by giving
different values to z1 and z2.
The wall may be created by using the \wall command.
If you try to create walls without setting the \setwz values, an appropriate
error message will be displayed.

        Example: \setwz -.1 .15 3 4.5

Result: All new walls will assume a width of 0.25 units (0.1 to the left of
the axial line, 0.15 to the right of the axial line), and a height of 3 units
at the starting point and rising to 4.5 units at the end.
