This template is used to format a character cell in a control sequence code chart. The arguments are:
- Required: The character in the cell
- The link target for the cell. For a character terminating an escape sequence, use an anchor target like #cursor-address and explain the escape sequence on the same page with an anchor. For a non-terminal character in the escape sequence, link to a subpage of the current page like /ESC. Terminating characters and non-terminating characters are styled with different background colors to readily distinguish between them.