When you create a new What's This? Help project for an HTML Help system, the following takes place:
What's This? Help Composer creates CONTEXT.TXT, a text-only file that is designed to contain all the context-sensitive topics that you author for your HTML Help system's application (.EXE, .DLL, .OCX).
CONTEXT.TXT is attached to your HTML Help project.
CONTEXT.TXT is stored in What's This? Help Composer's database. It is updated each time you edit your What's This? Help topics.
The files DIALOG.CID and CONTEXT.H are also saved in your HTML Help project folder. You do not need to edit these files. CONTEXT.H contains the topic IDs. Your Application developer will use these files to ensure that your topics appear at the appropriate dialogs and controls when users request help.
The Project Manager stores CONTEXT.TXT in the Text-Only Topic Files folder, located inside the Context-Sensitive Help folder. You can double-click CONTEXT.TXT to open What's This? Help Composer and edit your topics.
WARNING! If you delete any of these files from the Project Manager, the What's This? Help project is removed from your HTML Help project.
You open your HTML Help project first, and then select this file to open it in What's This? Help Composer. You author and edit the context-sensitive Help topics in What's This? Help Composer.
When you compile your HTML Help project, the context-sensitive topics are automatically compiled into your project, as part of the .CHM file.
As the name CONTEXT.TXT implies, your What's This? Help topics are text-only in format. They contain only text and no formatting, hyperlinks, images, etc.
For details about using What's This? Help Composer to author context-sensitive Help topics for dialogs and controls, refer to What's This? Help Composer's online Help system.