Insert the current date.
.TP
s
-Insert the system name, the name of the operating system.
+Insert the system name, the name of the operating system. Same as `uname -s'.
.TP
l
Insert the name of the current tty line.
.TP
m
-Insert the architecture identifier of the machine, eg. i486
+Insert the architecture identifier of the machine. Same as `uname -m'.
.TP
n
-Insert the nodename of the machine, also known as the hostname.
+Insert the nodename of the machine, also known as the hostname. Same as `uname -n'.
.TP
o
-Insert the NIS domainname of the machine.
+Insert the NIS domainname of the machine. Same as `hostname -d'.
.TP
O
Insert the DNS domainname of the machine.
.TP
r
-Insert the release number of the OS, eg. 1.1.9.
+Insert the release number of the OS. Same as `uname -r'.
.TP
t
Insert the current time.