15. Non-transitory computer-readable storage media including computer-executable instructions that, when executed by one or more processors, cause the one or more processors to at least: during output of a sequential content and a visual content, wherein output of the sequential content is synchronized to output of the sequential content, cause display within the visual content of an output indicator that advances during output of the sequential content and indicates a position within the visual content corresponding to a current output position of the sequential content; causing input of an input pointer referencing an input position within the visual content that is distinct from the position indicated by the output indicator; and during advancement of the output indicator, causing output of the sequential content to be modified based at least in part on a distance between the position indicated by the output indicator and the input position.
16. The non-transitory computer-readable storage media of claim 15 , wherein the computer-executable instructions further cause the one or more processors to output a visual cue of the distance between the input position and the position indicated by the output indicator.