PlanetsCentral

allies add 6 16

or

allies add 6
  allies add 16

I would prefer the second form (mainly because PCC2 messes the former :-)

Very interesting. I can also add about PCC that it is a bad idea to use the config command for the same player in multiple messages

this works in PCC

a c ID ~c ~v ~m

and this can go terribly wrong

a c ID ~c
a c ID ~v
a c ID ~m

PHost would simply perform one line after the other. PCC however may replace the former lines with the latter ones because it assumes in a way that you "changed your mind".