This topics contains links to various resources that you may find useful.
The most recent version of this guide can be found at the official site.
For general background information, see the Wikipedia entry Microsoft Assistance Markup Language or, for schema information, see the MAML information at help-info.de.
If you need a tool to convert HTML files to MAML, the HTML to MAML Converter is available to help you.
To discuss the help file builder and tools, suggest new features, report bugs in them, and request help using them, visit the Sandcastle Help File Builder project site.
For discussion and questions about help systems in general, visit the Microsoft Q&A Forums.
The retired Microsoft Developer Documentation and Help System forum may also provide information on older help systems.
If you need a spell checker for Visual Studio, the Visual Studio Spell Checker extension can be downloaded and installed from the Visual Studio Gallery. It is an editor extension that checks the spelling of comments, strings, and plain text as you type or interactively with a tool window. Support is included for spell checking source code, XML files, and MAML topic files. Versions are available for Versions are available for Visual Studio 2013 and 2015, Visual Studio 2017 and 2019 and Visual Studio 2022 and Later.
For extended XML comments completion support in Visual Studio 2019 and later, install the Extended XML Documentation Comments Completion Provider extension which can be downloaded and installed from the Visual Studio Gallery. Versions are available for Visual Studio 2019 and Visual Studio 2022 and later.
The HTML Help Workshop used to build HTML Help 1.x (.CHM) help files appears to have been discontinued and cannot be downloaded from the Microsoft site. If you need a copy to install, it can be downloaded from the Sandcastle Help File Builder project website