diff --git a/lib/6500/descr b/lib/6500/descr
index a82425392..8c5da8c63 100644
--- a/lib/6500/descr
+++ b/lib/6500/descr
@@ -1,3 +1,4 @@
+# $Revision$
 var w=2
 var p=2
 var s=2
diff --git a/lib/6809/descr b/lib/6809/descr
index c6e5b18c9..f08a013ce 100644
--- a/lib/6809/descr
+++ b/lib/6809/descr
@@ -1,3 +1,4 @@
+# $Revision$
 var w=2
 var i=2
 var p=2
diff --git a/lib/em22/descr b/lib/em22/descr
index 96569c233..32be1b44f 100644
--- a/lib/em22/descr
+++ b/lib/em22/descr
@@ -1,3 +1,4 @@
+# $Revision$
 var w=2
 var p=2
 var s=2
diff --git a/lib/em24/descr b/lib/em24/descr
index f6fc2be58..8570c8c08 100644
--- a/lib/em24/descr
+++ b/lib/em24/descr
@@ -1,3 +1,4 @@
+# $Revision$
 var w=2
 var p=4
 var s=2
diff --git a/lib/em44/descr b/lib/em44/descr
index 97855561a..215bf8541 100644
--- a/lib/em44/descr
+++ b/lib/em44/descr
@@ -1,3 +1,4 @@
+# $Revision$
 var w=4
 var p=4
 var s=2
diff --git a/lib/i80/descr b/lib/i80/descr
index 37a75a6c5..af950b9a0 100644
--- a/lib/i80/descr
+++ b/lib/i80/descr
@@ -1,3 +1,4 @@
+# $Revision$
 var w=2
 var p=2
 var s=2
diff --git a/lib/i86/descr b/lib/i86/descr
index 33d914faf..598aaaecd 100644
--- a/lib/i86/descr
+++ b/lib/i86/descr
@@ -1,3 +1,4 @@
+# $Revision$
 var w=2
 var p=2
 var s=2
diff --git a/lib/m68k2/descr b/lib/m68k2/descr
index e6c5caeaf..f8972c369 100644
--- a/lib/m68k2/descr
+++ b/lib/m68k2/descr
@@ -1,3 +1,4 @@
+# $Revision$
 var w=2
 var p=4
 var s=2
diff --git a/lib/m68k4/descr b/lib/m68k4/descr
index 35105f0aa..87bfb05d0 100644
--- a/lib/m68k4/descr
+++ b/lib/m68k4/descr
@@ -1,3 +1,4 @@
+# $Revision$
 var w=4
 var p=4
 var s=2
diff --git a/lib/ns/descr b/lib/ns/descr
index d41bbd517..a0933e4fd 100644
--- a/lib/ns/descr
+++ b/lib/ns/descr
@@ -1,3 +1,4 @@
+# $Revision$
 var w=4
 var p=4
 var s=2
diff --git a/lib/pmds/descr b/lib/pmds/descr
index 8b3205c21..957a9fdda 100644
--- a/lib/pmds/descr
+++ b/lib/pmds/descr
@@ -1,3 +1,4 @@
+# $Revision$
 # Script for use of ACK as cross C-compiler on VAX for PMDS machine
 # The output has its int's in the pmds order.
 # Conversion from VU-a.out to PMDS-a.out should still be done on the pmds.
diff --git a/lib/s2650/descr b/lib/s2650/descr
index 9eb87003e..ac6dfbaa7 100644
--- a/lib/s2650/descr
+++ b/lib/s2650/descr
@@ -1,3 +1,4 @@
+# $Revision$
 var w=2
 var p=2
 var s=2
diff --git a/lib/vax4/descr.src b/lib/vax4/descr.src
index b83d72497..aebe1c947 100644
--- a/lib/vax4/descr.src
+++ b/lib/vax4/descr.src
@@ -1,3 +1,4 @@
+# $Revision$
 var w=4
 var p=4
 var s=2
diff --git a/lib/z80/descr b/lib/z80/descr
index af1e8f1cc..7510f8343 100644
--- a/lib/z80/descr
+++ b/lib/z80/descr
@@ -1,3 +1,4 @@
+# $Revision$
 var w=2
 var p=2
 var s=2
diff --git a/lib/z8000/descr b/lib/z8000/descr
index 09085ca70..cc603ad29 100644
--- a/lib/z8000/descr
+++ b/lib/z8000/descr
@@ -1,3 +1,4 @@
+# $Revision$
 var w=2
 var p=2
 var s=2