setCaseLevel

The setCaseLevel command sets the case sensitivity level (used by the HLASM parser) for the current file. When the parser encounters an instruction in the source file, it uses a syntax definition for that instruction to determine if the instruction and the operands specified in the source file are correct. The case sensitivity affects how that check is performed.

Syntax
setCaseLevel ALL_CASE|NO_CASE|DEFAULT
Parameters
ALL_CASE
Opcodes and operands must match the case used in the syntax definition.
NO_CASE
All opcodes and operands can be specified in any case.
DEFAULT
The default level used by the High Level assembler and the HLASM parser. Opcode can be specified in any case and operands for all instructions (except macro instructions) can be specified in any case.
Note: If you are using a macro with the keyword operand KEY=A, the word KEY is case sensitive.