How to specify runtime options
When you specify runtime options, use commas to separate any suboptions of those options. If you
do not specify a suboption, you must still include the comma to indicate the omission of the
suboption. For example, STACK(,,ANYWHERE,FREE,,). However, trailing commas are not
required. STACK(,,ANYWHERE,FREE) is valid. If you do not specify any suboptions,
they are ignored. Either STACK or STACK() is valid.
If you run applications that are invoked by one of the exec family of functions,
such as a program executed under the z/OS UNIX System Services
shell, you can also use the _CEE_RUNOPTS environment variable to specify runtime options.
Refer to Using runtime options in z/OS Language Environment Programming Guide for a detailed description of the various ways in which you can specify Language Environment runtime options and program arguments. Also, use _CEE_RUNOPTS.