CS-ROLL CS-PICK CS-STACK
CS-ROLL ( 2a 2b 2c ... n -- 2b 2c ... 2a )  
ansi 15.6.2.1020 <TOOLS>
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

reference: p4_cs_roll in ../src/toolkit.c:0296, export CO CS-ROLL