mpv:tldr:686af

The command "[ ]" is not a specific command, but rather a placeholder or indication. It implies that the user should choose between different options or alternatives. The "[ ]" brackets generally denote a command or parameter that can be customized or filled in as per the user's requirements. Similarly, the "" phrase indicates that either option A or option B should be selected, depending on the context or specific situation. So, when encountered, the user needs to make a decision based on the options provided.