+ /**
+ * Read additional information from given contents of a (supertux-addoninfo ...) block
+ */
+ void parse(const lisp::Lisp& lisp);
+
+ /**
+ * Read additional information from given file
+ */
+ void parse(std::string fname);
+
+ /**
+ * Writes out Add-on metainformation to a Lisp Writer
+ */
+ void write(lisp::Writer& writer) const;
+
+ /**
+ * Writes out Add-on metainformation to a file
+ */
+ void write(std::string fname) const;
+
+ /**
+ * Checks if Add-on is the same as given one.
+ * If available, checks MD5 sum, else relies on title alone.
+ */
+ bool equals(const Addon& addon2) const;
+