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\part{ Global constants and objects}
\textbf{Colortext: NIThis information is valid for Horde 5 and later only. See Doc/Dev/GlobalsH4\footnote{http://example.com/index.php?page=Doc/Dev/GlobalsH4} for Horde 4 or Doc/Dev/GlobalsH3\footnote{http://example.com/index.php?page=Doc/Dev/GlobalsH3} for Horde 3.Colortext: NI}

Horde applications work with a standard set of constants:

\begin{tabular}{|l|l|}
\hline
\textbf{HORDE\_BASE} & The filesystem location of Horde\\
\hline
\textbf{[APP]\_BASE} & The filesystem location of the application's base (\textbf{[APP]} = name of current application)\\
\hline
\textbf{[APP]\_TEMPLATES} & The filesystem location of the application's template files (\textbf{[APP]} = name of current application)\\
\hline
\end{tabular}
Applications work with a number of standard global variables and object:

\begin{tabular}{|l|l|}
\hline
\textbf{\$browser} & Information on the client browser (Horde\_Browser\footnote{http://dev.horde.org/api/master/lib/Browser/classes/Horde\_Browser.html} object)\\
\hline
\textbf{\$cli} & CLI object (Horde\_Cli\footnote{http://dev.horde.org/api/master/lib/Cli/classes/Horde\_Cli.html} object; only if running in CLI mode)\\
\hline
\textbf{\$conf} & The configuration hash\\
\hline
\textbf{\$injector} & The injector instance; used to inject dependencies into various framework libraries (Horde\_Injector\footnote{http://dev.horde.org/api/master/lib/Injector/classes/Horde\_Injector.html} object)\\
\hline
\textbf{\$language} & The user's preferred language\\
\hline
\textbf{\$notification} & The notification handler (Horde\_Notification\_Handler\footnote{http://dev.horde.org/api/master/lib/Notification/classes/Horde\_Notification\_Handler.html} object)\\
\hline
\textbf{\$page\_output} & The page output helper object (Horde\_PageOutput\footnote{http://dev.horde.org/api/master/lib/Core/classes/Horde\_PageOutput.html} object)\\
\hline
\textbf{\$prefs} & The user preferences (Horde\_Prefs\footnote{http://dev.horde.org/api/master/lib/Prefs/classes/Horde\_Prefs.html} object)\\
\hline
\textbf{\$registry} & The Horde Registry\footnote{http://example.com/index.php?page=Doc/Dev/Registry} (Horde\_Registry\footnote{http://dev.horde.org/api/master/lib/Core/classes/Horde\_Registry.html} object)\\
\hline
\end{tabular}
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