Orange triangle represents caution/hazard. It surrounds a book topped with the magnifying glass. This is intended to be used as a template or mbox icon for such notices/cautions.
Incorporates two public domain commons files:
File:Book icoline.svg and File:Magnifying Glass.gif (the latter which was vector-traced by Inkscape's "Trace Bitmap" tool)

File was saved from its full Inkscape SVG format via the Optimized SVG save tool.
Own work
Gwennie-nyan