You can invoke the binder as you would any other program: as a job step, a subprogram or a subtask, and as a TSO or UNIX System Services command. You can execute the binder as a job step by specifying it on an EXEC job control statement in the JCL stream; you can execute it as a subprogram or subtask by using the ATTACH, LINK, LOAD, or XCTL macros. You can execute it under TSO with the LINK or LOADGO commands or in a UNIX environment with the c89 or ld commands. This topic describes these methods of invoking the binder.