Yes, here are some examples of special attributes:
Attribute Meaning
"*" All User Attrs (P-S RFC)
"+" All Operational Attrs (S-T I-D)
"+"<classname> All Attributes of an object class (I-T I-D)
"*;lang-"<xx> All User Attrs with lang-xx (no spec yet on
remaining)
"@"<uri> All Attrs listed at uri
"*MCSN>"<csnval> All User Attrs who's mod CSN is greater than that
specified
"*Len<"<len> All User Attr val's less than len octets
"^" No virtual attributes
"^^" No collective attributes
"$" Only static (no dynamically calculated) attributes
":-(" Attributes with deleted/unpurged values
"+dirOp" All directoryOperation operational
"+distOp" All distributedOperation operational
"+dsaOp" All dsaOperation operational
"#"<syntaxOID> All attributes belonging to specified syntax
Obviously, there are many (inconsistent) ways to express these, and
there are no guidelines or instructions to those who want to create new
special attributes but don't want to collide with special attributes
being defined by other people.
Jim