*---------------* *---------------* *---------------*
| | | | | |
| NAME | | OPERATION | | OPERAND |
| Field | | Field | | Field |
| | | | | |
| | | | | |
*-------*-------* *-------*-------* *-------*-------*
| | |
V Which | |
| can be | |
*------------*------------* V Which V Which
V V | must be | can be
*-------*-------* *-------*-------* *-------*-------* *-------*-------*
| | | | | | | |
| Sequence | | Variable | | A symbolic | | Zero or more |
| Symbol | | Symbol | | Operation | | operands |
| or space | | | | Code | | |
| (e.g. .SEQ) | | (e.g. &VAR) | | | | |
*---------------* *---------------* *---------------* *-------*-------*
|
V Composed of
*-------------------------*-------------------------*-------------------------*
V V V V
*-------*-------* *-------*-------* *-------*-------* *-------*-------*
| | | | | | | |
| Sequence | | Variable | | Expression | | (Exp)seq-sym |
| Symbol | | Symbol | | or | | (e.g. |
| | | | | (Expression) | | (&A EQ 1).SEQ)|
| | | | | | | |
*---------------* *---------------* *-------*-------* *---------------*
|
V Which can be any
| combination of
| variable symbols
| and other characters
| that constitute an
*-------------------------+-------------------------*
V V V
*-------*-------* *-------*-------* *-------*-------*
| | | | | |
| Arithmetic | | Logical | | Character |
| Expression | | Expression | | Expression |
| | | (e.g. | | |
| (e.g. &A+1) | | (&B1 OR &B2)) | | (e.g. 'JAN&C')|
*---------------* *---------------* *---------------*Macro instruction statements are described in Figure 7.
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