i don't remember what made me think that a %symbol% was better than a {.macro.} for such feature.
i'm quite tempted in switching, but it may happen that i just don't remember the good reason i had (tho i doubt). god knows.
what it does is: telling every group that the current user is member of, even by inheritance. Since it may be more than one, they are separated by ";"
the problem about documentation was that i'm not steadily documenting new symbols, just macros.
but i won't document this, and will mark it as deprecated.
in place of it you'll get a macro command.
i will opt for using the existent {.member of.} that currently must be used specifying the group.
if you won't specify the group, it will TELL you the groups.
the name of the macro is appropriated, IMO.
pros:
the name is much more coherent, since HFS don't express anymore the membership as "account linking",
and we can eventually ask for groups of a specified account instead of being bound to the current one.
sorry for the verbose reply.