Operand field

The entries allowed in the operand field of a model statement, before generation, are:

Spaces (if valid)
An ordinary symbol
A character string, combining alphanumeric and special characters (but not variable symbols)
A variable symbol
A combination of variable symbols and other character strings concatenated together
If the DBCS assembler option is specified, character strings that are enclosed in apostrophes can contain double-byte data.

The allowable results of generation are spaces (if valid) and a character string that represents a valid assembler, machine instruction, or macro instruction operand field.