diff --git a/stream/mts/psi/op.go b/stream/mts/psi/op.go
index 55ceb7d4..5abb96a4 100644
--- a/stream/mts/psi/op.go
+++ b/stream/mts/psi/op.go
@@ -1,3 +1,30 @@
+/*
+NAME
+  op.go
+DESCRIPTION
+  op.go provides functionality for editing and reading bytes slices
+	directly in order to insert/read timestamp and gps data in psi.
+
+AUTHOR
+  Saxon Milton <saxon@ausocean.org>
+
+LICENSE
+  op.go is Copyright (C) 2018 the Australian Ocean Lab (AusOcean)
+
+  It is free software: you can redistribute it and/or modify them
+  under the terms of the GNU General Public License as published by the
+  Free Software Foundation, either version 3 of the License, or (at your
+  option) any later version.
+
+  It is distributed in the hope that it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with revid in gpl.txt.  If not, see http://www.gnu.org/licenses.
+*/
+
 package psi
 
 import (
diff --git a/stream/mts/psi/psi.go b/stream/mts/psi/psi.go
index 2358fb0a..294b4d21 100644
--- a/stream/mts/psi/psi.go
+++ b/stream/mts/psi/psi.go
@@ -1,3 +1,29 @@
+/*
+NAME
+  psi.go
+DESCRIPTION
+  See Readme.md
+
+AUTHOR
+  Saxon Milton <saxon@ausocean.org>
+
+LICENSE
+  psi.go is Copyright (C) 2018 the Australian Ocean Lab (AusOcean)
+
+  It is free software: you can redistribute it and/or modify them
+  under the terms of the GNU General Public License as published by the
+  Free Software Foundation, either version 3 of the License, or (at your
+  option) any later version.
+
+  It is distributed in the hope that it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with revid in gpl.txt.  If not, see http://www.gnu.org/licenses.
+*/
+
 package psi
 
 import (
diff --git a/stream/mts/psi/psi_test.go b/stream/mts/psi/psi_test.go
index 2714db72..10eb773f 100644
--- a/stream/mts/psi/psi_test.go
+++ b/stream/mts/psi/psi_test.go
@@ -1,3 +1,29 @@
+/*
+NAME
+  psi_test.go
+DESCRIPTION
+  See Readme.md
+
+AUTHOR
+  Saxon Milton <saxon@ausocean.org>
+
+LICENSE
+  psi_test.go is Copyright (C) 2018 the Australian Ocean Lab (AusOcean)
+
+  It is free software: you can redistribute it and/or modify them
+  under the terms of the GNU General Public License as published by the
+  Free Software Foundation, either version 3 of the License, or (at your
+  option) any later version.
+
+  It is distributed in the hope that it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with revid in gpl.txt.  If not, see http://www.gnu.org/licenses.
+*/
+
 package psi
 
 import (
diff --git a/stream/mts/psi/std.go b/stream/mts/psi/std.go
index fee80347..6beed1c8 100644
--- a/stream/mts/psi/std.go
+++ b/stream/mts/psi/std.go
@@ -1,3 +1,29 @@
+/*
+NAME
+  std.go
+DESCRIPTION
+  See Readme.md
+
+AUTHOR
+  Saxon Milton <saxon@ausocean.org>
+
+LICENSE
+  std.go is Copyright (C) 2018 the Australian Ocean Lab (AusOcean)
+
+  It is free software: you can redistribute it and/or modify them
+  under the terms of the GNU General Public License as published by the
+  Free Software Foundation, either version 3 of the License, or (at your
+  option) any later version.
+
+  It is distributed in the hope that it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with revid in gpl.txt.  If not, see http://www.gnu.org/licenses.
+*/
+
 package psi
 
 // TODO: Finish off mts/psi so that we can create pat and pmt tables instead