First, thanks everyone for the help so far. I'm getting much more comfortable with this.
In the script I inherited, I see a mixture of "msg ...." and "/msg ....". Is one form preferred over the other, and if so, why? Here are some examples:
if ($did == 11) { /msg #marac !last5 }
if (%needreply != $null) { msg #MARAC ,2SPECIAL NEED [ $+ %readline $+ ]: %needreply }