diff --git a/abi-version.cmake.in b/abi-version.cmake.in
index ea1dc598e..34d7001d0 100644
--- a/abi-version.cmake.in
+++ b/abi-version.cmake.in
@@ -1,31 +1,11 @@
 /*
- * "$Id$"
- *
- * Configuration file for the Fast Light Tool Kit (FLTK).
- *
- * Copyright 1998-2016 by Bill Spitzak and others.
- *
- * This library is free software. Distribution and use rights are outlined in
- * the file "COPYING" which should have been included with this file.  If this
- * file is missing or damaged, see the license at:
- *
- *     http://www.fltk.org/COPYING.php
- *
- * Please report all bugs and problems on the following page:
- *
- *     http://www.fltk.org/str.php
- */
+  ABI Configuration file for the Fast Light Tool Kit (FLTK).
 
-/*
   ============================================================================
     DO NOT EDIT - This file is generated by CMake !
   ============================================================================
+
+  define FL_ABI_VERSION: 1xxyy for 1.x.y (xx,yy with leading zero)
 */
 
-/* define FL_ABI_VERSION: 1xxyy for 1.x.y (xx,yy with leading zero) */
-
 #cmakedefine FL_ABI_VERSION @FL_ABI_VERSION@
-
-/*
- * End of "$Id$".
- */
diff --git a/abi-version.ide b/abi-version.ide
index 3ed519ead..f07ddac52 100644
--- a/abi-version.ide
+++ b/abi-version.ide
@@ -1,22 +1,6 @@
 /*
- * "$Id$"
- *
- * Configuration file for the Fast Light Tool Kit (FLTK).
- *
- * Copyright 1998-2016 by Bill Spitzak and others.
- *
- * This library is free software. Distribution and use rights are outlined in
- * the file "COPYING" which should have been included with this file.  If this
- * file is missing or damaged, see the license at:
- *
- *     http://www.fltk.org/COPYING.php
- *
- * Please report all bugs and problems on the following page:
- *
- *     http://www.fltk.org/str.php
- */
+  ABI Configuration file for the Fast Light Tool Kit (FLTK).
 
-/*
   ============================================================================
     Edit with care!  This source file (abi-version.ide) is used to
     generate FL/abi-version.h by your IDE (Visual C++) build system !
@@ -29,20 +13,16 @@
     See below for instructions how to edit abi-version.ide.
     The default ABI version (#undef FL_ABI_VERSION) is 1.x.0 (1xx00).
   ============================================================================
+
+  Define FL_ABI_VERSION as 1xxyy for FLTK ABI version 1.x.y.
+
+  Use leading zeroes in xx and yy - don't use a leading zero for
+  the major version number (currently 1).
+  Replace the line below (#undef FL_ABI_VERSION) with your definition.
+
+  Example:
+
+  #define FL_ABI_VERSION 10302
 */
-/*
-   Define FL_ABI_VERSION as 1xxyy for FLTK ABI version 1.x.y.
-   Use leading zeroes in xx and yy - don't use a leading zero for
-   the major version number (currently 1).
-   Replace the line below (#undef FL_ABI_VERSION) with your definition.
-
-   Example:
-
-   #define FL_ABI_VERSION 10302
- */
 
 #undef FL_ABI_VERSION
-
-/*
- * End of "$Id$".
- */
diff --git a/abi-version.in b/abi-version.in
index 5b0857441..bd2c3c761 100644
--- a/abi-version.in
+++ b/abi-version.in
@@ -1,31 +1,11 @@
 /*
- * "$Id$"
- *
- * Configuration file for the Fast Light Tool Kit (FLTK).
- *
- * Copyright 1998-2016 by Bill Spitzak and others.
- *
- * This library is free software. Distribution and use rights are outlined in
- * the file "COPYING" which should have been included with this file.  If this
- * file is missing or damaged, see the license at:
- *
- *     http://www.fltk.org/COPYING.php
- *
- * Please report all bugs and problems on the following page:
- *
- *     http://www.fltk.org/str.php
- */
+  ABI Configuration file for the Fast Light Tool Kit (FLTK).
 
-/*
   ============================================================================
     DO NOT EDIT - This file is generated by configure !
   ============================================================================
+
+  define FL_ABI_VERSION: 1xxyy for 1.x.y (xx,yy with leading zero)
 */
 
-/* define FL_ABI_VERSION: 1xxyy for 1.x.y (xx,yy with leading zero) */
-
 #undef FL_ABI_VERSION
-
-/*
- * End of "$Id$".
- */