STP Guide, also known as STP pocket reference, in the context of STP Compliance, refers to a compact, mobile-friendly version of their environmental, health, and safety (EH&S) products and guidance. It allows users to quickly navigate, search, and access information about regulations and compliance from their mobile devices. Essentially, it's a tool that provides a concise and easily accessible summary of complex compliance requirements, designed for on-the-go use.