Use '.head' suffix for the file indicating the head of the queue
treeb8f3e867c420a33d0a301d91d58c82a8e0185ab7
-rw-r--r-- 368 DESCRIPTION
-rw-r--r-- 1023 NAMESPACE
drwxr-xr-x - R
drwxr-xr-x - inst
drwxr-xr-x - man
drwxr-xr-x - src
drwxr-xr-x - tests