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2.2.7 Modify

The Modify command is used to change characteristics of or extend existing track by adding new track. This command works with any unconnected track endpoint, or with a Cornu or Bezier track even if connected

The Modify command can be invoked using the Change>Modify menu item, the Modify button or the menu raised by a Right-Click over the Main Canvas.

Either the left mouse button (for changing length or creating a tangent track) or the right mouse button (for extending with a new track) is used to modify the unconnected endpoint.

The endpoints of a Line, Dimension Line, Table Edge or Bench-work can be dragged to new positions. A Box or a FilledBox can be modified by selecting a corner and dragging in two dimensions, or a side and dragging it orthogonally. These modifications preserve a 4-sided rectangle.

The controlpoints of a Cornu Track, Bezier Track or Bezier Line can be changed.

Curved Lines are modified in same manner as curved track.

Selecting a corner of a Poly Line or Polygon moves that corner to a new position, and if moved close to a neighboring corner will merge the two corners and delete the edge between them. Selecting an edge will create a corner that can be dragged to a new position.

Any tracks created during the Modify command will have the following properties inherited from the first track: selected state, hidden state, scale, track gauge and Layer.

For detail about;

Changing track length refer to Section 2.2.7.1.

Creating a tangent to a curve refer to Section 2.2.7.2

Changing track radius refer to Section 2.2.7.3

Extending track length refer to Section 2.2.7.4

Modifying a Cornu refer to Section 2.2.7.5

Modifying a Bezier refer to Section 2.2.7.6