The multi command allows you to enter more than one ICC command on a single
line separated by semicolons (;). However, if the first command or
commands on the line take too long to execute, the server may discard
the rest of the line (unless you're an administrator). Use of multi
is discouraged, for that reason, but it can be handy, especially in
aliases.
If you are giving a simultaneous exhibition, a command such as
"multi goto 123; Nf3" serves to make the move Nf3 in game number
123. If you're not a player in game 123, the multi stops right
there, rather than trying to play Nf3 in some other game; that is
a special property of the command "goto".
The word "multi" can be replaced by ; in the command. Aliases cannot
be used inside multi commands. You cannot make an alias with the name
"multi". Thus, you can use multi with just a single command to avoid
alias substituion.