It registers the position of Base Point/Base Line.

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When starting this command, the command which was starting before it is automatically ended.
A procedure is shown below.

1. The DIALOG which chooses Base Point/Base Line is displayed. Click a button with the mouse or push a Short-cut Key.


[Select Point/Line]Dialog Box

The display of the DIALOG can be omitted when starting a menu while pushing a corresponding Short-cut Key.
2. The TRACKER is displayed in the chosen Base Point/Base Line position.


3. It drags TRACKER and it moves.
Drag - It is not in the movement limitation.
Mouse Limit Key (Generally : Ctrl ) + Drag - It limits a movement to the vertical/horizontal/slant (45 degrees) direction.
When limiting a movement, continue to push Mouse Limit Key until it specifies a Control point.
As for the TRACKER, refer to P8 The way of the TRACKER operation. This command doesn’t end automatically. As for the way of ending, refer to The way of command’s ending. In ([Environment] command, Mouse Limit Key can be changed, too.