Options > View > Dynamic

These are the options on the Dynamic page:

Viewing Mode on startup — Set the default viewing mode when FeatureCAM first opens. For example, if you select Trackball, the next time FeatureCAM starts up, the viewing mode is Trackball.

All the viewing modes are available, plus an option called Mode from Last Session. This option keeps track of the viewing mode last set before FeatureCAM was closed, and uses that viewing mode the next time FeatureCAM starts up. For example, if the option is set to Mode from Last Session, and you had set the viewing mode to Rotate before you closed FeatureCAM, Rotate is the viewing mode that is used the next time you open FeatureCAM.

Middle mouse button behavior — Set the viewing mode for the middle mouse button.

You can set a specific viewing mode such as Trackball, Rotate, Pan, Zoom, Pan and Zoom, and so on, or choose the Current Viewing Mode option that allows the middle mouse button (along with key combinations) to perform the viewing mode that is currently selected.

Middle mouse button with Shift — Set the viewing mode for the middle mouse button, when the Shift key is held down.

Middle mouse button with Ctrl — Set the viewing mode for the middle mouse button, when the Ctrl key is held down.

Middle mouse button with Ctrl+Shift — Set the viewing mode for the middle mouse button, when the Ctrl and Shift keys are held down.

Reverse scroll wheel zoom — This option reverses the association of direction of the scroll wheel with the zoom direction.

Reset Settings — Reset the settings to either the FeatureCAM or PowerMill defaults:

FeatureCAM

PowerMill

Viewing Mode on startup

Pan and zoom

Trackball

Middle mouse button behavior

Current Viewing Mode

Trackball

Middle mouse button with Shift

Pan and Zoom

Pan

Middle mouse button with Ctrl

Rotate

PowerMill Pan & Zoom

Middle mouse button with Ctrl+Shift

Zoom

Box Zoom