+// should wxApp::OnFatalException() be called?
+WXDLLIMPEXP_BASE bool wxHandleFatalExceptions(bool doit = true);
+
+#endif // wxUSE_ON_FATAL_EXCEPTION
+
+#if wxABI_VERSION >= 20601
+// Launch url in the user's default internet browser
+WXDLLIMPEXP_BASE bool wxLaunchDefaultBrowser(const wxString& url);
+#endif
+
+// ----------------------------------------------------------------------------
+// Environment variables
+// ----------------------------------------------------------------------------
+
+// returns true if variable exists (value may be NULL if you just want to check
+// for this)
+WXDLLIMPEXP_BASE bool wxGetEnv(const wxString& var, wxString *value);
+
+// set the env var name to the given value, return true on success
+WXDLLIMPEXP_BASE bool wxSetEnv(const wxString& var, const wxChar *value);
+
+// remove the env var from environment
+inline bool wxUnsetEnv(const wxString& var) { return wxSetEnv(var, NULL); }
+
+// ----------------------------------------------------------------------------
+// Network and username functions.
+// ----------------------------------------------------------------------------
+
+// NB: "char *" functions are deprecated, use wxString ones!