TSO/E TEST and IDF have different command syntaxes. This section does not provide a detailed comparison of the two command sets. However, procedures are described to perform operations equivalent to those under TSO/E TEST.

The expression syntaxes are somewhat different. Instead of TSO/E TEST's "modname.csect.address" IDF uses "(modname.csect)address". The CSECT name may be omitted if the address is unique within the module. The module name may be omitted, if the address is in the qualified module, which is set by the QUALIFY command. For register specifications in expressions IDF uses "n(Rn)" instead of TSO/E TEST's "nR%+n". IDF supports the same "%" and "?" indirection operators as TSO/E TEST. However, the first indirection operator following a register specification is used to determine the size of the address in the register. For more details on expressions in IDF see Address expressions.