AddingUICommands
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Adding a toolbar for pinning down current topic, navigating through topics and opening external help.

C1DynamicHelp does not have any built-in GUI except for the control displaying help topics. But you can
use any GUI that you need to interact with C1DynamicHelp. This sample demonstrates how to create a
toolbar with common commands.

<pre>
This sample utilizes the following classes, methods and properties:
- C1DynamicHelp.Browser
- C1DynamicHelp.ShowExternalHelp(C1.Win.C1DynamicHelp.HelpTab tab)
- C1DynamicHelp.ShowExternalHelp(C1.Win.C1DynamicHelp.HelpTab tab, object parameter)
- C1DynamicHelp.IsPinnedDown
</pre>