For all subcommands, except the SLIP subcommand of OPERATOR, the following rule on the use of delimiters applies: unless otherwise indicated, use a blank (or blanks) as the delimiter between a subcommand and a following parameter, and between parameters.

For the SLIP subcommand of OPERATOR, the following rule applies: blanks are not allowed except between SLIP and SET, MOD, or DEL. For the other parameters of the SLIP subcommand of OPERATOR, a comma can be used as a delimiter.