Directive	Used for
MACRO, ENDM, SHIFT, MEXIT	Define macros
REPT, ENDR, REXIT	Repeat blocks
EQU, SET	Define integer symbols
EQUS	Define string symbols
GROUP	Define a new section group symbol
RSRESET, RSSET, __RB, __RW, __RL	Define RS symbols
PRINTT, PRINTV, PRINTF	Output text to stdout
FAIL, WARN	Display a warning or error on the console
ASSERTF, ASSERTW	Display a warning or error on the console, if an expression is false
EXPORT, IMPORT, GLOBAL, XDEF, XREF	Export and import symbols to/from other modules
PURGE	Remove a symbol from the symbol table
INCLUDE	Include and process a different source file
__DCB, __DCW, __DCL	Define data
INCBIN	Insert a binary file
__DSB, __DSW, __DSL	Reserve space in memory
EVEN, CNOP	Section alignment
SECTION	Define a new section
PUSHS, POPS	Push or pop a section on the section stack
ORG	Set the origin address for the following code
OPT	Set options
PUSHO, POPO	Push or pop options on the option stack
RANDSEED	Set random number generator seed
IFC, IFNC, IFD, IFND, IF, IFEQ, IFGT, IFGE, IFLT, IFLE, ELSE, ENDC	Used to form conditional assembling blocks

Further reading

• Introduction, goals and background
• Invoking the assembler and basic syntax
• Symbols and labels
• Control structures like INCLUDE, MACROs and conditional assembling.
• Expressions and how they're built
• Printing diagnostic messages, warnings and errors
• Organising code into sections. How to define data.
• The linker

Index and reference

• CPU specific details
• Index of all directives
• Index of all functions
• Operator reference
• String member reference