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# Help System

These classes provide for all forms of online-help in your application, with three levels of detail:

1. Tool Tips and Status Bar message - flyweight help, extremely brief, entirely integrated in the user interface, requiring little or no user interaction to invoke.
2. What's This? - lightweight, but can be a three-paragraph explanation.
3. Online Help - can encompass any amount of information, but is typically slower to call up, somewhat separated from the user's work, and often users feel that using online help is a digression from their real task.

Classes:

- QStatusBar (Horizontal bar suitable for presenting status information)
- QStyleSheet (A collection of styles for rich text rendering and a generator of tags)
- QTextBrowser (A rich text browser with simple navigation)
- QTextView (A sophisticated single-page rich text viewer)
- QToolTip (Tool tips (sometimes called balloon help) for any widget or rectangular part of a widget)
- QToolTipGroup (Collects tool tips into natural groups)
- QWhatsThis (Simple description of any widget, e.g. answering the question "what's this?")