1.1.1 and later
AllowGroup specifies a group-expression that is specifically permitted within the context of the <Limit> block it is applied to. group-expression has the same format as that used in DefaultRoot, in that it should contain a comma separated list of groups or "not" groups (by prefixing a group name with the `!' character) that are to be allowed access to the block.
By default, the expression is parsed as a boolean "AND" list, meaning that ALL elements of the expression must evaluate to logically true in order to the explicit allow to apply. In order to treat the expression as a boolean "OR" list, meaning that ANY of the elements must evaluate to logically true, use the optional "OR" keyword. Similarly, to treat the expression as a regular expression, use the "regex" keyword.
# An OR-evaluated AllowGroup directive AllowGroup OR www,doc # A regular expression DenyGroup directive DenyGroup regex ^sys