A procedure tells the reader what to do, step by step. In STE, procedures use commands, one instruction in each sentence, and the steps in the order the reader does them. The reader must be able to follow the procedure without stopping to interpret it.
Write instructions as commands
- Start the instruction with a verb in the imperative: "Remove", "Install", "Turn", "Do not".
- Do not write instructions as descriptions: "The cover is then removed" is a description, not an instruction.
One instruction in each sentence
- Each sentence gives one instruction.
- Exception: you can put two actions in one sentence when the reader does them at the same time: "Push and hold the button."
Put conditions first
- If an instruction applies only in a specific condition, write the condition first: "If the light flashes, stop the motor."
- The reader then knows the condition before reading the action.
Write the steps in the correct order
- Write the steps in the order the reader does them.
- Do not write "Disconnect the hose after you stop the pump." Write "Stop the pump. Disconnect the hose."
Use notes only for information
- A note gives extra information. It does not give instructions.
- If the reader must do something, write it as a step.
Maximum length
- Procedural sentences have a maximum of 20 words. Most should be much shorter.