* -1 if the package name was not found.
*/
-void MacPackInsert (int Id);
-/* Insert the macro package with the given id in the input stream */
+int MacPackInsert (int Id);
+/* Insert the macro package with the given id in the input stream. Returns
+ * true if the macro package was found and successfully inserted. Returns
+ * false otherwise.
+ */
void MacPackSetDir (const StrBuf* Dir);
/* Set a directory where files for macro packages can be found. Standard is