* CS-ROLL ( 2a 2b 2c ... n -- 2b 2c ... 2a )

roll a value in the compilation-stack - note that the compilation
stack _can_ be seperate in some forth-implemenations. In PFE
the parameter-stack is used in a double-cell fashion, so CS-ROLL
would 2ROLL a DP-mark and a COMP-magic, see ROLL

FORTH/ANS tools (dpANS15.6.2.1020) ordinary primitive