extern bool fgLoadFlight (istream &input);
+/**
+ * Load properties from a file.
+ *
+ * @param file The relative or absolute filename.
+ * @param props The property node to load the properties into.
+ * @param in_fg_root If true, look for the file relative to
+ * $FG_ROOT; otherwise, look for the file relative to the
+ * current working directory.
+ * @return true if the properties loaded successfully, false
+ * otherwise.
+ */
+extern bool fgLoadProps (const char * path, SGPropertyNode * props,
+ bool in_fg_root = true);
+
+
\f
////////////////////////////////////////////////////////////////////////
// Convenience functions for getting property values.