Various contols and other parts of wxWidgets need an ID. Sometimes the
ID may be directly provided by the use or have a predefined value, such as
-wxID_OPEN. Often, however, the value of the ID is unimportant and is created
-automatically by calling \helpref{wxWindow::NewControlId}{wxwindownewcontrolid}
-or by passing wxID_ANY as the ID of an object.
+\texttt{wxID\_OPEN}. Often, however, the value of the ID is unimportant and is
+created automatically by calling \helpref{wxWindow::NewControlId}{wxwindownewcontrolid}
+or by passing \texttt{wxID\_ANY} as the ID of an object.
There are two ways to generate an ID. One way, is to start at a negative number,
and for each new ID, return the next smallest number. This is fine for systems