User symbols are case sensitive

Toggles case sensitivity on and off. By default, case sensitivity is on. This means that, for example, LABEL and label refer to different symbols. When case sensitivity is off, LABEL and label will refer to the same symbol.

Allow mnemonics in first column

Makes mnemonics names (without a trailing colon) that start in the first column to be recognized as mnemonics. By default, the assembler treats all identifiers starting in the first column as labels.

Allow directives in first column

Makes directive names (without a trailing colon) that start in the first column to be recognized as directives. By default, the assembler treats all identifiers starting in the first column as labels.

Macro quote characters

Selects the characters used for the left and right quotes of each macro argument. By default, the characters are < and >.

Macro quote characters changes the quote characters to suit an alternative convention or simply to allow a macro argument to contain < or >.