+\wxheading{Parameters}
+
+\docparam{show\_wait\_msg}{If true then a decoration-less window with progress message is displayed.}
+\docparam{book\_file}{Help book filename. It is recommended to use this prototype
+instead of the one taking URL, because it is less error-prone.}
+\docparam{book\_url}{Help book URL (note that syntax of filename and URL is
+different on most platforms)}
+
+\wxheading{Note}
+
+Don't forget to install wxFileSystem ZIP handler with
+{\tt wxFileSystem::AddHandler(new wxZipFSHandler);} before calling this method
+on a .zip or .htb file!