Template:Chset-color-misc-var/doc

Usage
Used with Template:chset-tableformat data rows for characters in the M*, Z* or C* Unicode categories (i.e. whitespace, combining characters, control characters and end-user defined characters). This is a shaded variant for use where there is need to distinguish certain cells.

Note that Private Use Area characters are classified as Co, but private use mappings in individual encodings may be for well-defined characters which do (or did) not have Unicode codepoints (e.g. in KPS 9566), it may make more sense to assign those to a hypothetical category for that character. If a private use mapping is for user definition, then they should be coloured as Co.