If you have a legitimate copy of GameMaker 8.1, pressing opens the manual. It is typically a .chm (Compiled HTML Help) file. Over the years, fans have also converted it to PDF and even HTML web archives.
Current official documentation at manual.gamemaker.io refers to the modern "GameMaker" (formerly GameMaker Studio 2). Many functions in the modern manual (like those related to Sequences or Layer-based room editing) do exist in version 8.1. Always ensure you are looking at resources specifically labeled Game Maker 8 or 8.1 to avoid compatibility confusion. 1 on a modern version of Windows? Game Maker 8 - Documentation & Help gamemaker 8.1 manual
Understanding the 8.1 environment starts with its hierarchy of assets. The manual divides these into several key categories: If you have a legitimate copy of GameMaker 8
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