18. A system comprising: one or more processors; one or more computer-readable media storing computer-executable instructions that, when executed by the one or more processors, cause the one or more processors to perform acts comprising: receiving a request that specifies a user utterance with regard to content having user-selectable elements; analyzing the content to identify an audio command corresponding to one or more user-selectable elements of the user-selectable elements, the audio command being identified based at least in part on an acoustic differentiation between the audio command and a different audio command meeting or exceeding a threshold; selecting the audio command based at least in part on the user utterance; and responding to the request in accordance with a user-selectable element of the one or more user-selectable elements corresponding to the audio command, the responding including causing information associated with the audio command to be visually output via a projector associated with a device.
18. A system comprising: one or more processors; one or more computer-readable media storing computer-executable instructions that, when executed by the one or more processors, cause the one or more processors to perform acts comprising: receiving a request that specifies a user utterance with regard to content having user-selectable elements; analyzing the content to identify an audio command corresponding to one or more user-selectable elements of the user-selectable elements, the audio command being identified based at least in part on an acoustic differentiation between the audio command and a different audio command meeting or exceeding a threshold; selecting the audio command based at least in part on the user utterance; and responding to the request in accordance with a user-selectable element of the one or more user-selectable elements corresponding to the audio command, the responding including causing information associated with the audio command to be visually output via a projector associated with a device. 21. The system of claim 18 , wherein analyzing the content to identify the audio command comprises selecting text from the content.