# 3.4 Mouse Actions

XTrackCAD uses the left and right mouse buttons when manipulating tracks and other objects on the layout. Their meaning depends on the particular command but in general:

  Left-Click - selects an object or an endpoint.

  Left+Drag - modifies an object, such as extending it.

  Right-Click - displays a pop-up menu of commands.

  Shift+Right-Click - displays a pop-up menu of command options (for some commands).

  Rotate Wheel - zooms drawing area in and out.

When Moving and Rotating ( Placing Turnouts and Structures, Moving the Print and Snap Grids, ... ):

  (Left+Drag) - moves the objects or grid.

  (Right+Drag) - rotates the objects or grid about the pivot point, which is the point you started the drag operation.

Some commands use the `Shift` or `Ctrl` key to modify the meaning of button presses.

- 3.4.1 Context Sensitive Menus