When starting this command, the command which was starting before it is automatically ended.
A procedure is shown below.
1. It chooses the object (curved surface). (For the details, refer to The way of choosing object.)
2. When inputting a twist angle in the numerical value
It starts [Numeric Mode] command and it makes a numerical value input state.
The starting of [Numeric Mode] command can be omitted when starting a menu while pushing Numeric Mode Shortcut
Key(Generally : Shift ), too.
3. When displaying a twist angle in the numerical value
It starts [Show The Number] command and it makes a numerical value display condition.
4. When Shape is reversed from the present setup
F5 key is pushed, and the [Shape] mode is taken. When effective, it can edit in the form at the time of generation.
5. When Shading is reversed from the present setup
F6 key is pushed, and the [Shading] mode is taken. Shading will be carried out by the solid of a perspective when effective.
6. It starts [Twist[Ctl-P]] command.
7. TRACKER is displayed in the Control point line(Section) position.
TRACKER color : Dark Green. : The section directional Control point line.
8. It clicks the left button according to TRACKER in the mouse cursor, it chooses a section.
Left button click - The choice of the Control point
Left button drag - The choice of the Control point
With the above key + Ctrl Point Add Key (Generally : Ctrl ), it is chosen in the addition by the selection control point before it
9. In case of the numerical value input state


Twist] Dialog Box
The [Twist] Dialog Box is displayed. It specifies a twist angle.
10. In case of the mouse input state (except the numerical value input state)
TRACKER (Blue) with Control point on the section is displayed in three planes(X-Y, Y-Z, Z-X). It twists while dragging.
Drag in the plane which is the nearest the section. At this time, in case of the numerical value display condition,
it displays a twist angle at the numerical value.
This command doesn’t end automatically. As for the way of ending, refer to The way of command’s ending. As for the
TRACKER, refer to The way of the TRACKER operation. In [Environment] command, Numeric Mode Short-cut
Key can be changed, too. When a thing except 0 is set to the Tension Coefficient, it has an influence on the thing except the
moving Control point, too. For the details, refer to [Tension Coefficient] command.

Since Ver1.1
　　The range limitation function was made.
　The control point is made non-display by acquiring the center of the object automatically now and specifying the direction of side in the front side back of the direction seen from each axis.
This item of effective comes to display it by putting the check.
Moreover, the back and Front
Front : small direction
Back: Maximum direction
　　When setting it as follows. The control point on X preaxial side (Because it is the maximum value) becomes non-display.
　


In the control point movement, when the range is exceeded, it becomes non-display. (necesary more development. )