- **data-heading-level** - optional; Able Player injects an off-screen HTML heading "Media Player" (or localized equivalent) at the top of the player so screen reader users can easily find the player. It automatically assigns a heading level that is one level deeper than the closest parent heading. This attribute can be used to manually set the heading level, rather than relying on Able Player to assign it automatically. Valid values are 1 through 6. A value of 0 is also supported, and instructs Able Player to not inject a heading at all. The latter should be used only if the web page already includes a heading immediately prior to the media player.

- **data-hide-controls** - optional; set to "true" to hide controls during playback. Controls are visibly hidden but still accessible to assistive technologies. Controls reappear if user presses any key or moves the mouse over the video player region.

- **data-icon-type** - optional; "svg", "font" or "image"; "svg" is the default with automatic fallback to "font" unless either (a) the browser doesn't support icon fonts or (b) the user has a custom style sheet that may impact the display of icon fonts; in either case falls back to images. Should generally leave as is unless testing the fallback.

- **data-start-time** - optional; time at which you want the audio to start playing (in seconds)

- **data-volume** - optional; set the default volume (0 to 10; default is 7 to avoid overpowering screen reader audio)

- **data-seek-interval** - optional; interval (in seconds) of forward and rewind buttons. By default, seek interval is intelligently calculated based on duration of the media.