addcom allows a player to join a comsys channel.
COMMAND: addcom <alias>=<channel>
The alias and the channel name are case sensitive.
Using this command, you can join a pre-existing channel by specifying the alias you wish to use. If the channel is named 'Public', then you must type it with the same case. Likewise the alias is case sensitive. If you use 'addcom Pub=Public', then to use the channel you must type 'Pub Hello instead of 'pub Hello'.
One other thing to be careful of: adding a channel multiple times with different aliases. While this is possible, it is also discouraged. You will receive a warning when it happens.
>addcom pub=Public Channel Public added with alias pub.