PIP - Office...
File Extension PIP
Information about PIP files and how to open them
Preference file used by Microsoft Office programs to store "Personalized Menus and Toolbars" settings; created by each Office application by evaluating what menu commands are used most; only commonly used commands are displayed in a shortened version of each menu. PIP files are saved in the Application DataMicrosoftOffice directory and are named [program].pip. For example, Microsoft Word's menu settings file may be named "Word.pip" or "Word2.pip." NOTE: The menu options in Office programs can be manually customized by selecting View → Toolbars → Customize, then clicking the "Options" tab.