added lowlevel API
diff --git a/include/fuse.h b/include/fuse.h
index 24e8871..07438b1 100644
--- a/include/fuse.h
+++ b/include/fuse.h
@@ -449,7 +449,7 @@
 /**
  * Obsolete, doesn't do anything
  * 
- * @return 0 
+ * @return -EINVAL
  */
 int fuse_invalidate(struct fuse *f, const char *path);
 
@@ -474,9 +474,6 @@
  * Advanced API for event handling, don't worry about this...  *
  * ----------------------------------------------------------- */
 
-/** Structure containing a raw command */
-struct fuse_cmd;
-
 /** Function type used to process commands */
 typedef void (*fuse_processor_t)(struct fuse *, struct fuse_cmd *, void *);