Function LaunchRexxScript 

pub unsafe fn LaunchRexxScript(
    RexxSysBase: *mut Library,
    script: CONST_STRPTR,
    replyport: *mut MsgPort,
    extension: CONST_STRPTR,
    input: BPTR,
    output: BPTR,
) -> *mut RexxMsg

libname: “rexxsyslib.library” (V47) (Kickstart 3.2 / 2020)