commit - d74b9ff1b6e79ba750e72c023d4d2ea0a71663bc
commit + 369e8fb78f85eb24c718ee9317a47dc0fb3d5e3b
blob - 38b7b58bde02104ee973c62ffad06b624ced330a
blob + 0605a207d461f176d2e3e95aeee99d70f1702be6
--- 9p.7
+++ 9p.7
@@ -283,7 +283,12 @@ into the given
 .Ar fid .
 .Pp
 It is illegal to use an already opened
-.Ar fid .
+.Ar fid
+or to attempt to create the
+.Dq \&.
+or
+.Dq ..
+entries.
 .It Ic read
 Read data at offset from file
 .Bd -literal