Heavily revise & fix links in API.md

API.md was originally a copy of the old Docs/HotLabelComponent.md. It
was re-written to make content relate the project's API only.

Links broken by reorganisation of folder structure and file renamings
were fixed.

Author: delphidabbler

Diff for: HotLabel/2/API.md

@@ -1,31 +1,25 @@
-# Hot Label Component #
+# [Hot Label Component](../index.md) Programmer's Guide
 
-The _PJHotLabel_ unit contains a single component, _[TPJHotLabel](TPJHotLabel.md)_, that implements a label control that can access a URL when clicked.
+**Applies to:** ~>2.0
 
-Several types are defined in the unit in total. They are:
+## Introduction
 
-| Type | Description |
-| -------- | --------- |
-| _[TPJHotLabel](TPJHotLabel.md)_ | The Hot Label Component itself. |
-| _[EPJURLError](EPJURLError.md)_  | A custom exception that is raised by _[TPJHotLabel](TPJHotLabel.md)_ when URL related errors are encountered. |
-| _TPJHLHintStyle_ | An enumeration of hint styles used by the _[HintStyle](TPJHotLabelHintStyle.md)_ property. See the property's documentation for details. |
-| _TPJHLCustomHintEvent_ | The type of event triggered by the _[OnCustomHint](TPJHotLabelOnCustomHint.md)_ event. See the event's documentation for details. |
-
-**Note:** This documentation relates to release 2.0 and later. Any features introduced after v2.0 are flagged with the relevant version number as a superscript.
+This section of the _Hot Label Component_ documentation describes the API exposed by the unit to programmers.
 
-## Examples ##
+The _Hot Label Component_ is supplied in a single unit,  _PJHotLabel_.
 
-The following examples provide some ideas of how to use the component:
+## Contents
 
-  1. [Using highlighting](HotLabelExample1.md)
-  1. [Using the OnCustomHint event](HotLabelExample2.md)
-  1. [Tracking visits to URLs](HotLabelExample3.md)<sup>[v2.2]</sup>
+_PJHotLabel_ contains the following classes and other types. They are:
 
-A further example is provided by the demo program that is included in the download.
+| Type | Description |
+| -------- | --------- |
+| _[TPJHotLabel](./API/TPJHotLabel.md)_ | The Hot Label Component itself. |
+| _[EPJURLError](./API/EPJURLError.md)_  | A custom exception that is raised by _[TPJHotLabel](./API/TPJHotLabel.md)_ when URL related errors are encountered. |
+| _TPJHLHintStyle_ | An enumeration of hint styles used by the _[HintStyle](./API/TPJHotLabel-HintStyle.md)_ property. See the property's documentation for details. |
+| _TPJHLCustomHintEvent_ | The type of event triggered by the _[OnCustomHint](./API/TPJHotLabel-OnCustomHint.md)_ event. See the event's documentation for details. |
 
 ## Links
 
-* Back to [Documentation Home Page](../index.md)
-* [Hot Label Component Web Page](https://delphidabbler.com/software/hotlabel) -- Install notes, change log, license etc.
-* [Downloads](https://sourceforge.net/projects/ddablib/files/hotlabel/) -- Download current version here.
-* [Source Code](https://github.com/ddablib/hotlabel) -- Current development tree.
+* [Overview](./Overview.md)
+* [Examples](./Examples.md)