Many media players give users the option to customize captions to meet their personal preferences. These preferences always override author styling. For some users, customizing captions is essential, not just an enhancement: styling captions in a specific manner (for example, yellow text over a black background, with a very large font size) may be the only way for them to make the text readable.
This seems like an unnecessarily long note that repeats what is already elsewhere in the tutorial. There is also (circular) referencing between the two pages, which makes the tutorial more confusing and difficult to follow. I suggest moving this to the bottom of the section and shortening it to something like:
"Many media players give users further options to customize captions to meet their personal preferences and individual needs. Section Playing Accessible Media of this tutorial explains these."
Current text:
This seems like an unnecessarily long note that repeats what is already elsewhere in the tutorial. There is also (circular) referencing between the two pages, which makes the tutorial more confusing and difficult to follow. I suggest moving this to the bottom of the section and shortening it to something like:
"Many media players give users further options to customize captions to meet their personal preferences and individual needs. Section Playing Accessible Media of this tutorial explains these."