13.1 These adjuncts to the text may be used to  highlight  or  emphasize important   points  when  necessary.Warnings and cautions shall precede the text to which each applies, but notes  may  precede  or follow  applicable  text  depending   on  the  material   to  be highlighted, warning,  cautions  and  notes  shall  not  contain  procedural  steps nor shall  they be numbered. When a warning,  caution  or  note consists of two or more  paragraphs,  the  heading WARNI NG,  CAUTION, NOTE,  shall  not be repeated  above each paragraph. If  it is ever necessary to precede a paragraph by  a  warning  and  a  note,  or  a caution  and  a  note,  etc.,  they  shall  appear  in  the  sequence  as noted, namely, warnings, cautions, notes. Such inserts in the text shall be short and concise and be used to emphasize important and critical instructions.

WARNING
An operating procedure, inspection, repair or maintenance practice, which if not  correctly  followed,   could  result in personal injury, or loss of life.

CAUTION
An operating procedure, inspection, repair or maintenance practice, which if not strictly observed, could result in damage or destruction of equipment.
NOTE
An operating procedure, inspection, repair or maintenance condition, etc., which is deemed essential to highlight.