Directive	What it does	Syntax
END	Terminate the task.	label END[cr]
GOTO	Unconditional branch.	label GOTO label[cr]
HALT	Suspend execution of the task.	label HALT[cr]
IF	Branch if condition is true.	label IF [logical_expression] label[cr]
LET	Assign a calculated value to a variable.	label LET variable=expression[cr]
ONEND	Define a label for task termination.	label ONEND label[cr]
REM	Introduce a line of text as a comment.	label REM text[cr]
SET	Assign a value to a numeric variable.	label SET numeric_variable value[cr]
START	Force a binary variable to TRUE.	label START binary_variable[cr]
STOP	Force a binary value to FALSE.	label STOP binary_variable[cr]
TRACE	Define an RTES register to track the task execution.	label TRACE register_name[cr]
WAIT	Suspend execution for a period of time.	label WAIT time[cr]
X	Execute the rest of the line as an operator command	label X command[cr]
APP	Set record position to end of file.
ERROR	Define a RTES register to report file handling errors.
GPOS	Get current record position.
OPEN	Define a set of files - floating point ASCII format.
BOPEN	Define a set of files - 32 bit floating point binary format.
EOPEN	Define a set of files - 32 bit floating point IEEE (short real) format.
IOPEN	Define a set of files - 16 bit integer format.
POS	Set record position.
READ	Read a record.
WRITE	Write a record

Shortcut keys
F1, F2 and F3 generate START, STOP and SET, respectively. Most other directives are obtained by holding the [Alt] key and pressing the first letter of the word.

The logical expressions and expressions used in the IF and LET instructions follow the same syntax as those in the rules.

Example:

The following task will add the value of STEP to the value of LEVEL. The operation will be repeated 10 times, at 3 second intervals. The numeric variables STEP, LEVEL and C are defined.

1 SET C 10

2 LET LEVEL=LEVEL+STEP

3 LET C=C-1

4 IF [C>0] 6

5 END

6 WAIT 3

7 GOTO 2