Gives the current version of the server you are logged into and information about the modes the server is set in, such as, CR1.8.1.win32.ws2 irc.webmaster.com dnfu
d - DNS
f - Flood control
u - Users are able to register channels
A - Alpha NT
B - BSDi
D - Digital Unix
F - FreeBSD
H - HPUX
I - IRIX
L - Linux
N - NetBSD
S - Solaris
ws2 Winsock2
win32 Windows 95/98/NT
Examples:
/version webmaster.webchat.org
/version webmaster.*
/version
Any user can retrieve version information. Although it is unlikely you will need the information.