Hosting and domain costs until October 2024 have been generously sponsored by dumptruck_ds. Thank you!
DP CON ALIASPARAMETERS
From Quake Wiki
Indicates this engine supports aliases containing $1 through $9 parameter macros (which when called will expand to the parameters passed to the alias, for example alias test "say $2 $1", then you can type test hi there and it will execute say there hi), as well as $0 (name of the alias) and $* (all parameters $1 onward).