```

Variables use shortcut key V.

Implicit definition of variables by function VAL():
Example: VAL(P20 P21)  - the distance between 2 points.

Variables are temporarily displayed as horzontal lines;
the length indicates the value.

V Variable - Value
V - variable value
Direct allocation of a variable

With Pageup / Page Down key a defined variable.

V X/Y/Z-part PT|VC
get the X- or Y- or Z-part of a point or of a Vector.

# extract the x-coordinate of a point
V20 = X(P20)

V PT-PT Dist.[Direction]
Variable = length between 2 points [into direction]

[Direction]   optional; keine Angabe: direct length between 2 points.
Distance along a vector: define a vector

Example:
V20 = P20 P21
# distance from point P20 to point P21 into direction Z:
V21=P20 P21 DZ

V LN      length
V LN Length
Variable = length of a Distance

V20 = L20

V PT - LN Perp.Dist
PT-V LN normal distance
Variable = Normal distance of a point from a distance

V20 = P20 L20

Variable = radius of a circle

V20 = C20

V Angle line/vector
Variable = angle of a line or vector

Line/Vector              provide line or vector
- get angle az in TOP-view between line and the X-axis of the active coord.system

[tilt-angle]             Pageup / Page Down ("PERP")
- tilt-angle ay: the angle between the line and the XY-plane of the active coord.system

[REVers]                 Pageup / Page Down ("REV")
- 180-degree complementry angle (180 - angle)

[complement]             Pageup / Page Down ("CX")
- 360-degree complementry angle (360 - angle)

V20 = ANG D(L20)

restore vector from angles:
- vector vcx = rotate X-axis around Z-axis angle = az;
- vector = rotate vcx around the (new) Y-axis angle = ay
(the new Y-axis is in the XY-plane of the active coordinate-system)

V Angle 2 lines/vectors
Variable = angle between 2 lines or vectors

Line/Vector 1            provide line or vector

[Line/Vector 2]

[REVers]                 Pageup / Page Down ("REV")
- 180-degree complementry angle (180 - angle)

[complement]             Pageup / Page Down ("CX")
- 360-degree complementry angle (360 - angle)

V20 = ANG L21 L20

```