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Use Conditional Statements and Decision Tables Appropriately

A conditional statement is an action substep that describes a condition and the action to be taken if that condition applies. Conditional statements are used when a decision must be made by the person performing the task. Conditional terms are usually capitalized. Use IF to present the condition to the performer of the task, and use THEN to present the action. For example:

IF the plug is not clean,

THEN return to storage.

or

IF	THEN
plug is not clean	return to storage
plug is clean	install

When two conditions are present, use IF and AND followed by THEN. (You may also use IF and OR followed by THEN in a similar fashion.) For example:

IF outside temperature is less than 39° F

AND heated ...