Here's why:
* Glossary: Many manuals have a glossary that defines key terms specific to the manual's topic. This is especially common for technical manuals with specialized vocabulary.
* Index: If the word isn't in the glossary, the index can help you locate pages where "understand" is used in context. This may give you a clue about its meaning within the manual.
Important Note: If you're looking for a general definition of "understand," you'd be better off consulting a dictionary or thesaurus. Manuals primarily focus on defining terms within their specific context.