View source for Documentation/4.8/SlicerApplication/MainApplicationGUI/MouseModes

===Mouse Modes===
[[image:Slicer4MouseModeToolbar.jpg | center]]
Slicer has two mouse modes: '''Transform''' (which allows interactive rotate, translate and zoom operations), and '''Place''' (which permits objects to be interactively placed in 3D or 2D).

The toolbar icons that switch between these mouse modes are shown from left to right above, respectively. '''Place Fiducial''' is the default place option as shown above; options to place both '''Ruler''' and '''Region of Interest''' Widgets are also available from the drop-down Place Mode menu.

'''Hint: Transform''' mode is the default interaction mode. By default, '''Place''' mode persists for one "place" operation after the Place Mode icon is selected, and then the mode switches back to Transform. Place mode can be made persistent (useful for creating multiple fiducial points, rulers, etc.) by checking the '''Persistent''' checkbox shown rightmost in the Mouse Mode Toolbar.