The following tables show the possible sources of specification and order of override for individual options.

• The order of override between sources of specification is from left to right. A specification overrides all specifications to its right.
• The order of override within a source is from top to bottom. A specification overrides all specifications below it.
• For DFSPARM, 'keyword' (for example, BSAM) indicates a PARM option, whereas 'operation keyword' (for example, DEBUG BSAM) indicates a control statement option.
• The Function columns indicate which functions (S=sort, M=merge, or C=copy) can use the option.
• Although alias names are available for many of the options, they are not shown here.