Once in VR, most functions are accessible directly through the VR controllers. These examples use the Oculus Touch controllers, but other supported controllers work the same way as long as they have the corresponding buttons. The main buttons are:

• Trigger: Action button activated using the index finger. This is usually used to use the various VR tools (move clipping planes, sculpt or track objects), or to interact with menu items. 
• Grab: Main navigation tool activated using the middle finger. Grab and hold to move a point in space at the tip of the controller. Grab and move with both hands to adjust the position of two points in the volume relative to each other. Moving these points apart will expand the volume, moving them together will shrink the volume. This can also be used to rotate the volume.
• Left-hand joystick: Tool selection. Clicking on the joystick with your thumb will open the Tools menu. Use your right hand and the trigger to select various tools and functions. Moving the joystick left or right will switch between various modes for the current tool (e.g. add/remove objects, type of clipping mode, etc)
• Right-hand joystick: Also sometimes used to switch between other aspects of the current tool (e.g. switch objects sculpting tool shape) and to progress forward or back through a time series
• A: Accept / confirm. Used to confirm the end of the current tool executions (e.g. finish the current track, object edit, line measurement).
• B: Help. Press once to show the help menu for the current tool. Press again to close it.
• X: Cancel / Delete. Used to cancel the current action without saving changes or to delete objects (e.g. point in a line)
• Y: Quick tool change
• Menu: Opens the main settings menu. In the main menu, users can select which channels to display, adjust opacity curves, and access many other settings of the software.