16. A non-transitory computer-readable medium with computer code instruction stored thereon, the computer code instructions, when executed by a processor, cause an apparatus to: (i) recognize a user utterance; (ii) cause an action to be performed upon recognition of the utterance as a preset speech command; (iii) support user-configurable speech commands; and (iv) present the preset speech command and an associated field to a user of the head mounted display device, and receive a substitute speech command, from the user of the head mounted display device, entered into the associated field.
17. The non-transitory computer-readable medium of claim 16 , wherein the computer code instructions, when executed by a processor, further cause the apparatus, upon recognizing the substitute speech command, to perform a first action, wherein the first action corresponds to the preset speech command.