This is the first release of Z33FCP, the flow command package for use with ZCPR33. It is an adaptation of the FCP10 that I released through ZSIG. The main changes are 1) that the code determines whether the IF command was invoked with a directory prefix (forcing transient flow processing) in a much more efficient manner using a new Z33 facility, and 2) that the code automatically loads a transient IF.COM processor with a type-3 environment to the correct address (Z33FCP will NOT work with any other type of IF.COM). The transient code must also accept the environment address in the HL register on entry and install itself. The transient IF.COM program Z33IF is also an adaptation from the COMIF program that I released through ZSIG. It has been updated to a type-3 environment for use with Z33FCP. It also self-installs using the value of the environment address passed to it in the HL register. IF8000.COM is a version linked to run at 8000H. It was linked with a separate data segment and the new, highly efficient Echelon libraries. Both programs have been converted to work with the ZAS assembler (or any of the SLR assemblers). Jay Sage May 17, 1987