Add Help to Your Application
From Lazarus wiki
Jump to navigationJump to searchThe LCL comes with a help system.
Quick Start
Open the example in examples/helphtml/.
This project demonstrates how to use the HTML help components. Just drop them on a form of your project. Setup the paths and create soem HTML pages as help. Then give all controls of your application, which should have Online Help a HelpKeyword.
Help Basics
The LCL help mainly consists of two parts: Help databases and help viewers. A Help Database contains the mapping from the keywords (ID, node, message, pascal, ...) to the help page (or whatever). The Help Viewer is invoked by the Help Database to show the help to the user.