Safety instructions tell the readers that procedures or steps in procedures can be dangerous or cause damage.


The words and definitions that follow agree with the specifications for technical publications that are applicable to aerospace and defense:
- A warning tells the reader that there is a risk of injury or death.

- A caution tells the reader that there is a risk of damage to objects.


It is possible that other industries use different words or categories for safety instructions. If you use different words (for example, “danger”, “attention”, or “notice”) or graphical symbols, always make sure that contents obey the principles of rules 7.1 thru 7.3. For more information, refer to:
- ANSI Z535.6 American National Standard for Product Safety Information in Product Manuals, Instructions, and Other Collateral Materials

- ISO 3864-2 Graphical symbols - Safety colours and safety signs.

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