Document the format of the group selection

[fwyzard]

The files under groups/ follow a specific format:

{
    "key": "group",
    ...
}

Key

key has the format [type|]label, and both type and label can be

• empty (match anything)
• a literal string
• a glob expression

If type is not indicated, it is assumed to be empty, matching any type.

For example:

• "label" matches a module with the exact label label
• "type|*" or just "type|" matches any module of type type
• "type|label" matches any module of type exactly type and label exactly label

etc.

Group

The group has the format group[|subgroup ...], that is one group followed by any number of subgroups, separated by a | character.