> Unfortunately, replacing "his" with "his/her" is a simple, but incomplete
> solution because it doesn't take reflectors, gateways, or group/role
> accounts (helpdesk, postmaster, root) into account.

This is why I advocate use of Spivak pronouns:

e = he/she
em = them (singular)
eir = their (singular)
eirs = his/hers
ey = they (singular)

etc.

But I don't have an ISO number :-)

Have fun,

Paul