diff --git a/tools/binpac/lib/binpac_analyzer.h b/tools/binpac/lib/binpac_analyzer.h
index e3e4a9ffd5..9e03b593d1 100644
--- a/tools/binpac/lib/binpac_analyzer.h
+++ b/tools/binpac/lib/binpac_analyzer.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef binpac_an_h
 #define binpac_an_h
 
diff --git a/tools/binpac/lib/binpac_buffer.cc b/tools/binpac/lib/binpac_buffer.cc
index 915c370e1d..92cde625c8 100644
--- a/tools/binpac/lib/binpac_buffer.cc
+++ b/tools/binpac/lib/binpac_buffer.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h> // for memcpy
diff --git a/tools/binpac/lib/binpac_buffer.h b/tools/binpac/lib/binpac_buffer.h
index a4de6d66e9..f7cf012950 100644
--- a/tools/binpac/lib/binpac_buffer.h
+++ b/tools/binpac/lib/binpac_buffer.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef binpac_buffer_h
 #define binpac_buffer_h
 
diff --git a/tools/binpac/lib/binpac_bytestring.cc b/tools/binpac/lib/binpac_bytestring.cc
index be34209d6c..dd07d78976 100644
--- a/tools/binpac/lib/binpac_bytestring.cc
+++ b/tools/binpac/lib/binpac_bytestring.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #define binpac_regex_h
 
 #include "binpac_bytestring.h"
diff --git a/tools/binpac/lib/binpac_bytestring.h b/tools/binpac/lib/binpac_bytestring.h
index c9b856f655..6a33f2eb8f 100644
--- a/tools/binpac/lib/binpac_bytestring.h
+++ b/tools/binpac/lib/binpac_bytestring.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef binpac_bytestring_h
 #define binpac_bytestring_h
 
diff --git a/tools/binpac/lib/binpac_exception.h b/tools/binpac/lib/binpac_exception.h
index 6b4f57a718..8578ae83fc 100644
--- a/tools/binpac/lib/binpac_exception.h
+++ b/tools/binpac/lib/binpac_exception.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef binpac_exception_h
 #define binpac_exception_h
 
diff --git a/tools/binpac/lib/binpac_regex.cc b/tools/binpac/lib/binpac_regex.cc
index 3fb146772b..34ca1add2a 100644
--- a/tools/binpac/lib/binpac_regex.cc
+++ b/tools/binpac/lib/binpac_regex.cc
@@ -1,3 +1,4 @@
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include <vector>
 
diff --git a/tools/binpac/src/pac_action.cc b/tools/binpac/src/pac_action.cc
index 2863f65402..12afd6a9ba 100644
--- a/tools/binpac/src/pac_action.cc
+++ b/tools/binpac/src/pac_action.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_action.h"
 
 #include "pac_embedded.h"
diff --git a/tools/binpac/src/pac_action.h b/tools/binpac/src/pac_action.h
index 3e8d4357e1..521fc4d0da 100644
--- a/tools/binpac/src/pac_action.h
+++ b/tools/binpac/src/pac_action.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_action_h
 #define pac_action_h
 
diff --git a/tools/binpac/src/pac_analyzer.cc b/tools/binpac/src/pac_analyzer.cc
index d404fa34d6..d128afadab 100644
--- a/tools/binpac/src/pac_analyzer.cc
+++ b/tools/binpac/src/pac_analyzer.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_analyzer.h"
 
 #include "pac_action.h"
diff --git a/tools/binpac/src/pac_analyzer.h b/tools/binpac/src/pac_analyzer.h
index 671e2b030f..7c6a6c523a 100644
--- a/tools/binpac/src/pac_analyzer.h
+++ b/tools/binpac/src/pac_analyzer.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_analyzer_h
 #define pac_analyzer_h
 
diff --git a/tools/binpac/src/pac_array.cc b/tools/binpac/src/pac_array.cc
index b59d9a43a1..d942de1c96 100644
--- a/tools/binpac/src/pac_array.cc
+++ b/tools/binpac/src/pac_array.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_array.h"
 
 #include "pac_attr.h"
diff --git a/tools/binpac/src/pac_array.h b/tools/binpac/src/pac_array.h
index 2baadc840f..bf0791a805 100644
--- a/tools/binpac/src/pac_array.h
+++ b/tools/binpac/src/pac_array.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_array_h
 #define pac_array_h
 
diff --git a/tools/binpac/src/pac_attr.cc b/tools/binpac/src/pac_attr.cc
index 858f5051ce..a917ea2ea2 100644
--- a/tools/binpac/src/pac_attr.cc
+++ b/tools/binpac/src/pac_attr.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_attr.h"
 
 #include "pac_expr.h"
diff --git a/tools/binpac/src/pac_attr.h b/tools/binpac/src/pac_attr.h
index 1b6a0d8321..7dd5a74d05 100644
--- a/tools/binpac/src/pac_attr.h
+++ b/tools/binpac/src/pac_attr.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_attr_h
 #define pac_attr_h
 
diff --git a/tools/binpac/src/pac_btype.cc b/tools/binpac/src/pac_btype.cc
index d56b9ab6df..27844d786c 100644
--- a/tools/binpac/src/pac_btype.cc
+++ b/tools/binpac/src/pac_btype.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_btype.h"
 
 #include "pac_dataptr.h"
diff --git a/tools/binpac/src/pac_btype.h b/tools/binpac/src/pac_btype.h
index bff7be5404..320d2cb886 100644
--- a/tools/binpac/src/pac_btype.h
+++ b/tools/binpac/src/pac_btype.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_btype_h
 #define pac_btype_h
 
diff --git a/tools/binpac/src/pac_case.cc b/tools/binpac/src/pac_case.cc
index 38f7963dfe..c9c859cc80 100644
--- a/tools/binpac/src/pac_case.cc
+++ b/tools/binpac/src/pac_case.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_case.h"
 
 #include <stdint.h>
diff --git a/tools/binpac/src/pac_case.h b/tools/binpac/src/pac_case.h
index bb8e862b43..bbeefaaf18 100644
--- a/tools/binpac/src/pac_case.h
+++ b/tools/binpac/src/pac_case.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_case_h
 #define pac_case_h
 
diff --git a/tools/binpac/src/pac_cclass.h b/tools/binpac/src/pac_cclass.h
index d1129f6f99..c28b297f22 100644
--- a/tools/binpac/src/pac_cclass.h
+++ b/tools/binpac/src/pac_cclass.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_cclass_h
 #define pac_cclass_h
 
diff --git a/tools/binpac/src/pac_common.h b/tools/binpac/src/pac_common.h
index 0808450c27..4289506882 100644
--- a/tools/binpac/src/pac_common.h
+++ b/tools/binpac/src/pac_common.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_common_h
 #define pac_common_h
 
diff --git a/tools/binpac/src/pac_conn.cc b/tools/binpac/src/pac_conn.cc
index deb8a77a6e..ae26c75a1c 100644
--- a/tools/binpac/src/pac_conn.cc
+++ b/tools/binpac/src/pac_conn.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_conn.h"
 
 #include "pac_analyzer.h"
diff --git a/tools/binpac/src/pac_conn.h b/tools/binpac/src/pac_conn.h
index eb63cce603..08acaebb1b 100644
--- a/tools/binpac/src/pac_conn.h
+++ b/tools/binpac/src/pac_conn.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_conn_h
 #define pac_conn_h
 
diff --git a/tools/binpac/src/pac_context.cc b/tools/binpac/src/pac_context.cc
index 59f3ee20bb..ced1770377 100644
--- a/tools/binpac/src/pac_context.cc
+++ b/tools/binpac/src/pac_context.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_context.h"
 
 #include "pac_analyzer.h"
diff --git a/tools/binpac/src/pac_context.h b/tools/binpac/src/pac_context.h
index a52052e10e..bb5a8264b3 100644
--- a/tools/binpac/src/pac_context.h
+++ b/tools/binpac/src/pac_context.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_context_h
 #define pac_context_h
 
diff --git a/tools/binpac/src/pac_cstr.cc b/tools/binpac/src/pac_cstr.cc
index cd3120a29a..fa61824af3 100644
--- a/tools/binpac/src/pac_cstr.cc
+++ b/tools/binpac/src/pac_cstr.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_cstr.h"
 
 #include "pac_dbg.h"
diff --git a/tools/binpac/src/pac_cstr.h b/tools/binpac/src/pac_cstr.h
index 7443397329..90735cc2d5 100644
--- a/tools/binpac/src/pac_cstr.h
+++ b/tools/binpac/src/pac_cstr.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_cstr_h
 #define pac_cstr_h
 
diff --git a/tools/binpac/src/pac_ctype.cc b/tools/binpac/src/pac_ctype.cc
index cb36a9f51c..f892c03105 100644
--- a/tools/binpac/src/pac_ctype.cc
+++ b/tools/binpac/src/pac_ctype.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_ctype.h"
 
 string CType::DeclareInstance(const string& var) const { return strfmt("%s %s", name().c_str(), var.c_str()); }
diff --git a/tools/binpac/src/pac_ctype.h b/tools/binpac/src/pac_ctype.h
index 11ab0b8f82..472d89fb64 100644
--- a/tools/binpac/src/pac_ctype.h
+++ b/tools/binpac/src/pac_ctype.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_ctype_h
 #define pac_ctype_h
 
diff --git a/tools/binpac/src/pac_datadep.cc b/tools/binpac/src/pac_datadep.cc
index 85402db510..dfa85ebb48 100644
--- a/tools/binpac/src/pac_datadep.cc
+++ b/tools/binpac/src/pac_datadep.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_datadep.h"
 
 #include "pac_expr.h"
diff --git a/tools/binpac/src/pac_datadep.h b/tools/binpac/src/pac_datadep.h
index 184e2563b9..9267375241 100644
--- a/tools/binpac/src/pac_datadep.h
+++ b/tools/binpac/src/pac_datadep.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_datadep_h
 #define pac_datadep_h
 
diff --git a/tools/binpac/src/pac_dataptr.cc b/tools/binpac/src/pac_dataptr.cc
index 53d44e60b0..8abe60283d 100644
--- a/tools/binpac/src/pac_dataptr.cc
+++ b/tools/binpac/src/pac_dataptr.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_dataptr.h"
 
 #include "pac_exception.h"
diff --git a/tools/binpac/src/pac_dataptr.h b/tools/binpac/src/pac_dataptr.h
index 1ad102f8a1..676b610d02 100644
--- a/tools/binpac/src/pac_dataptr.h
+++ b/tools/binpac/src/pac_dataptr.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_dataptr_h
 #define pac_dataptr_h
 
diff --git a/tools/binpac/src/pac_dataunit.cc b/tools/binpac/src/pac_dataunit.cc
index a51ba4ccca..50443dc0ca 100644
--- a/tools/binpac/src/pac_dataunit.cc
+++ b/tools/binpac/src/pac_dataunit.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_dataunit.h"
 
 #include "pac_context.h"
diff --git a/tools/binpac/src/pac_dataunit.h b/tools/binpac/src/pac_dataunit.h
index cf3d6edaa0..e8a6fe9465 100644
--- a/tools/binpac/src/pac_dataunit.h
+++ b/tools/binpac/src/pac_dataunit.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_dataunit_h
 #define pac_dataunit_h
 
diff --git a/tools/binpac/src/pac_dbg.h b/tools/binpac/src/pac_dbg.h
index 04b8518096..9f930ffc40 100644
--- a/tools/binpac/src/pac_dbg.h
+++ b/tools/binpac/src/pac_dbg.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_dbg_h
 #define pac_dbg_h
 
diff --git a/tools/binpac/src/pac_decl-inl.h b/tools/binpac/src/pac_decl-inl.h
index 84dfce9d01..587fa43163 100644
--- a/tools/binpac/src/pac_decl-inl.h
+++ b/tools/binpac/src/pac_decl-inl.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_decl_inl_h
 #define pac_decl_inl_h
 
diff --git a/tools/binpac/src/pac_decl.cc b/tools/binpac/src/pac_decl.cc
index 1ea3325d0f..f8605cbdb4 100644
--- a/tools/binpac/src/pac_decl.cc
+++ b/tools/binpac/src/pac_decl.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_decl.h"
 
 #include "pac_attr.h"
diff --git a/tools/binpac/src/pac_decl.h b/tools/binpac/src/pac_decl.h
index f3c4426b3c..b5e2a2557a 100644
--- a/tools/binpac/src/pac_decl.h
+++ b/tools/binpac/src/pac_decl.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_decl_h
 #define pac_decl_h
 
diff --git a/tools/binpac/src/pac_embedded.cc b/tools/binpac/src/pac_embedded.cc
index 48dc39143e..3296715ac9 100644
--- a/tools/binpac/src/pac_embedded.cc
+++ b/tools/binpac/src/pac_embedded.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_embedded.h"
 
 #include "pac_id.h"
diff --git a/tools/binpac/src/pac_embedded.h b/tools/binpac/src/pac_embedded.h
index 93403411b2..a2f85f74f7 100644
--- a/tools/binpac/src/pac_embedded.h
+++ b/tools/binpac/src/pac_embedded.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_embedded_h
 #define pac_embedded_h
 
diff --git a/tools/binpac/src/pac_enum.cc b/tools/binpac/src/pac_enum.cc
index 02e90fe0c6..e31563d6de 100644
--- a/tools/binpac/src/pac_enum.cc
+++ b/tools/binpac/src/pac_enum.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_enum.h"
 
 #include "pac_exception.h"
diff --git a/tools/binpac/src/pac_enum.h b/tools/binpac/src/pac_enum.h
index fa7fdec776..1b74e9016a 100644
--- a/tools/binpac/src/pac_enum.h
+++ b/tools/binpac/src/pac_enum.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_enum_h
 #define pac_enum_h
 
diff --git a/tools/binpac/src/pac_exception.cc b/tools/binpac/src/pac_exception.cc
index c985338796..dfa911618c 100644
--- a/tools/binpac/src/pac_exception.cc
+++ b/tools/binpac/src/pac_exception.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_exception.h"
 
 #include "pac_expr.h"
diff --git a/tools/binpac/src/pac_exception.h b/tools/binpac/src/pac_exception.h
index c3860539a1..2c06603dec 100644
--- a/tools/binpac/src/pac_exception.h
+++ b/tools/binpac/src/pac_exception.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_exception_h
 #define pac_exception_h
 
diff --git a/tools/binpac/src/pac_expr.cc b/tools/binpac/src/pac_expr.cc
index 360562afc5..fc4cbcc38d 100644
--- a/tools/binpac/src/pac_expr.cc
+++ b/tools/binpac/src/pac_expr.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_expr.h"
 
 #include "pac_case.h"
diff --git a/tools/binpac/src/pac_expr.h b/tools/binpac/src/pac_expr.h
index f72f1439e2..7fc698db75 100644
--- a/tools/binpac/src/pac_expr.h
+++ b/tools/binpac/src/pac_expr.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_expr_h
 #define pac_expr_h
 
diff --git a/tools/binpac/src/pac_exttype.cc b/tools/binpac/src/pac_exttype.cc
index 7b9970c91e..d2adb77aee 100644
--- a/tools/binpac/src/pac_exttype.cc
+++ b/tools/binpac/src/pac_exttype.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_exttype.h"
 
 #include "pac_decl.h"
diff --git a/tools/binpac/src/pac_exttype.h b/tools/binpac/src/pac_exttype.h
index 8f49332d6b..cf4ead6643 100644
--- a/tools/binpac/src/pac_exttype.h
+++ b/tools/binpac/src/pac_exttype.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_exttype_h
 #define pac_exttype_h
 
diff --git a/tools/binpac/src/pac_field.cc b/tools/binpac/src/pac_field.cc
index 0673555878..b706c744d8 100644
--- a/tools/binpac/src/pac_field.cc
+++ b/tools/binpac/src/pac_field.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_field.h"
 
 #include "pac_attr.h"
diff --git a/tools/binpac/src/pac_field.h b/tools/binpac/src/pac_field.h
index bde5ff0f43..8211eca839 100644
--- a/tools/binpac/src/pac_field.h
+++ b/tools/binpac/src/pac_field.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_field_h
 #define pac_field_h
 
diff --git a/tools/binpac/src/pac_flow.cc b/tools/binpac/src/pac_flow.cc
index 7b72979b38..6e6944a78d 100644
--- a/tools/binpac/src/pac_flow.cc
+++ b/tools/binpac/src/pac_flow.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_flow.h"
 
 #include "pac_analyzer.h"
diff --git a/tools/binpac/src/pac_flow.h b/tools/binpac/src/pac_flow.h
index ae15b6bbad..7008248b62 100644
--- a/tools/binpac/src/pac_flow.h
+++ b/tools/binpac/src/pac_flow.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_flow_h
 #define pac_flow_h
 
diff --git a/tools/binpac/src/pac_func.cc b/tools/binpac/src/pac_func.cc
index 6c1e3804aa..e94b1fc6c5 100644
--- a/tools/binpac/src/pac_func.cc
+++ b/tools/binpac/src/pac_func.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_func.h"
 
 #include "pac_embedded.h"
diff --git a/tools/binpac/src/pac_func.h b/tools/binpac/src/pac_func.h
index 4246450496..a604a89714 100644
--- a/tools/binpac/src/pac_func.h
+++ b/tools/binpac/src/pac_func.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_func_h
 #define pac_func_h
 
diff --git a/tools/binpac/src/pac_id.cc b/tools/binpac/src/pac_id.cc
index 06c2d4373d..1c18e27157 100644
--- a/tools/binpac/src/pac_id.cc
+++ b/tools/binpac/src/pac_id.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_id.h"
 
 #include "pac_exception.h"
diff --git a/tools/binpac/src/pac_id.h b/tools/binpac/src/pac_id.h
index 9c46da50c0..7299283439 100644
--- a/tools/binpac/src/pac_id.h
+++ b/tools/binpac/src/pac_id.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_id_h
 #define pac_id_h
 
diff --git a/tools/binpac/src/pac_inputbuf.cc b/tools/binpac/src/pac_inputbuf.cc
index ae2756361a..d047532ed3 100644
--- a/tools/binpac/src/pac_inputbuf.cc
+++ b/tools/binpac/src/pac_inputbuf.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_inputbuf.h"
 
 #include "pac_expr.h"
diff --git a/tools/binpac/src/pac_inputbuf.h b/tools/binpac/src/pac_inputbuf.h
index 5d7fa5c9b1..56fde403cf 100644
--- a/tools/binpac/src/pac_inputbuf.h
+++ b/tools/binpac/src/pac_inputbuf.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_inputbuf_h
 #define pac_inputbuf_h
 
diff --git a/tools/binpac/src/pac_let.cc b/tools/binpac/src/pac_let.cc
index 27917cdce2..7682e3fd36 100644
--- a/tools/binpac/src/pac_let.cc
+++ b/tools/binpac/src/pac_let.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_let.h"
 
 #include "pac_expr.h"
diff --git a/tools/binpac/src/pac_let.h b/tools/binpac/src/pac_let.h
index ac14bebef0..27fe5c7424 100644
--- a/tools/binpac/src/pac_let.h
+++ b/tools/binpac/src/pac_let.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_let_h
 #define pac_let_h
 
diff --git a/tools/binpac/src/pac_main.cc b/tools/binpac/src/pac_main.cc
index cd9a11feb9..e645bd08f0 100644
--- a/tools/binpac/src/pac_main.cc
+++ b/tools/binpac/src/pac_main.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include <ctype.h>
 #include <unistd.h>
 
diff --git a/tools/binpac/src/pac_nullptr.h b/tools/binpac/src/pac_nullptr.h
index f1fe8e545a..ef80bbd845 100644
--- a/tools/binpac/src/pac_nullptr.h
+++ b/tools/binpac/src/pac_nullptr.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_nullptr_h
 #define pac_nullptr_h
 
diff --git a/tools/binpac/src/pac_number.h b/tools/binpac/src/pac_number.h
index 5f8bfa6197..6fdd164624 100644
--- a/tools/binpac/src/pac_number.h
+++ b/tools/binpac/src/pac_number.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_number_h
 #define pac_number_h
 
diff --git a/tools/binpac/src/pac_output.cc b/tools/binpac/src/pac_output.cc
index 6171b80b0c..7889d1f224 100644
--- a/tools/binpac/src/pac_output.cc
+++ b/tools/binpac/src/pac_output.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_output.h"
 
 #include <errno.h>
diff --git a/tools/binpac/src/pac_output.h b/tools/binpac/src/pac_output.h
index 4c612b0cce..15a4b8ed2f 100644
--- a/tools/binpac/src/pac_output.h
+++ b/tools/binpac/src/pac_output.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_output_h
 #define pac_output_h
 
diff --git a/tools/binpac/src/pac_param.cc b/tools/binpac/src/pac_param.cc
index 91f1984873..4e9b851baa 100644
--- a/tools/binpac/src/pac_param.cc
+++ b/tools/binpac/src/pac_param.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_param.h"
 
 #include "pac_decl.h"
diff --git a/tools/binpac/src/pac_param.h b/tools/binpac/src/pac_param.h
index 5e1e101d5b..50b1d5ce8c 100644
--- a/tools/binpac/src/pac_param.h
+++ b/tools/binpac/src/pac_param.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_param_h
 #define pac_param_h
 
diff --git a/tools/binpac/src/pac_paramtype.cc b/tools/binpac/src/pac_paramtype.cc
index 8cacd1669a..9fd2511b1a 100644
--- a/tools/binpac/src/pac_paramtype.cc
+++ b/tools/binpac/src/pac_paramtype.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_paramtype.h"
 
 #include "pac_context.h"
diff --git a/tools/binpac/src/pac_paramtype.h b/tools/binpac/src/pac_paramtype.h
index 72e427c580..d4d10c3b50 100644
--- a/tools/binpac/src/pac_paramtype.h
+++ b/tools/binpac/src/pac_paramtype.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_paramtype_h
 #define pac_paramtype_h
 
diff --git a/tools/binpac/src/pac_primitive.cc b/tools/binpac/src/pac_primitive.cc
index faf43bc234..e129cc81f6 100644
--- a/tools/binpac/src/pac_primitive.cc
+++ b/tools/binpac/src/pac_primitive.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_primitive.h"
 
 #include "pac_dbg.h"
diff --git a/tools/binpac/src/pac_primitive.h b/tools/binpac/src/pac_primitive.h
index 9ee248b8e1..d9869c15d2 100644
--- a/tools/binpac/src/pac_primitive.h
+++ b/tools/binpac/src/pac_primitive.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_primitive_h
 #define pac_primitive_h
 
diff --git a/tools/binpac/src/pac_record.cc b/tools/binpac/src/pac_record.cc
index 145604b13a..d11ba20d43 100644
--- a/tools/binpac/src/pac_record.cc
+++ b/tools/binpac/src/pac_record.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_record.h"
 
 #include "pac_attr.h"
diff --git a/tools/binpac/src/pac_record.h b/tools/binpac/src/pac_record.h
index 539a04a6ba..287608c7fa 100644
--- a/tools/binpac/src/pac_record.h
+++ b/tools/binpac/src/pac_record.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_record_h
 #define pac_record_h
 
diff --git a/tools/binpac/src/pac_redef.cc b/tools/binpac/src/pac_redef.cc
index c4368bbb5f..03c327ec7c 100644
--- a/tools/binpac/src/pac_redef.cc
+++ b/tools/binpac/src/pac_redef.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_redef.h"
 
 #include "pac_analyzer.h"
diff --git a/tools/binpac/src/pac_redef.h b/tools/binpac/src/pac_redef.h
index 3d6f0c259c..432df7e2f9 100644
--- a/tools/binpac/src/pac_redef.h
+++ b/tools/binpac/src/pac_redef.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_redef_h
 #define pac_redef_h
 
diff --git a/tools/binpac/src/pac_regex.cc b/tools/binpac/src/pac_regex.cc
index fc7c48469f..517ca91451 100644
--- a/tools/binpac/src/pac_regex.cc
+++ b/tools/binpac/src/pac_regex.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_regex.h"
 
 #include "pac_exttype.h"
diff --git a/tools/binpac/src/pac_regex.h b/tools/binpac/src/pac_regex.h
index 93487b8da8..fa4cc081da 100644
--- a/tools/binpac/src/pac_regex.h
+++ b/tools/binpac/src/pac_regex.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_regex_h
 #define pac_regex_h
 
diff --git a/tools/binpac/src/pac_state.cc b/tools/binpac/src/pac_state.cc
index 03aba62610..e14ec5fea4 100644
--- a/tools/binpac/src/pac_state.cc
+++ b/tools/binpac/src/pac_state.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_state.h"
 
 #include "pac_id.h"
diff --git a/tools/binpac/src/pac_state.h b/tools/binpac/src/pac_state.h
index d54219d3da..a26d98785d 100644
--- a/tools/binpac/src/pac_state.h
+++ b/tools/binpac/src/pac_state.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_state_h
 #define pac_state_h
 
diff --git a/tools/binpac/src/pac_strtype.cc b/tools/binpac/src/pac_strtype.cc
index 00d9c3df2d..63ea247d87 100644
--- a/tools/binpac/src/pac_strtype.cc
+++ b/tools/binpac/src/pac_strtype.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_strtype.h"
 
 #include "pac_attr.h"
diff --git a/tools/binpac/src/pac_strtype.h b/tools/binpac/src/pac_strtype.h
index ce087d1756..4e725b5f13 100644
--- a/tools/binpac/src/pac_strtype.h
+++ b/tools/binpac/src/pac_strtype.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_strtype_h
 #define pac_strtype_h
 
diff --git a/tools/binpac/src/pac_type.cc b/tools/binpac/src/pac_type.cc
index 394d1492f8..a3654b80b6 100644
--- a/tools/binpac/src/pac_type.cc
+++ b/tools/binpac/src/pac_type.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_type.h"
 
 #include "pac_action.h"
diff --git a/tools/binpac/src/pac_type.h b/tools/binpac/src/pac_type.h
index 507ac1c886..05df25870f 100644
--- a/tools/binpac/src/pac_type.h
+++ b/tools/binpac/src/pac_type.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_type_h
 #define pac_type_h
 
diff --git a/tools/binpac/src/pac_typedecl.cc b/tools/binpac/src/pac_typedecl.cc
index 268fdc3344..5b3ca26179 100644
--- a/tools/binpac/src/pac_typedecl.cc
+++ b/tools/binpac/src/pac_typedecl.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_typedecl.h"
 
 #include "pac_attr.h"
diff --git a/tools/binpac/src/pac_typedecl.h b/tools/binpac/src/pac_typedecl.h
index fa55fe4969..8b6e6a80e6 100644
--- a/tools/binpac/src/pac_typedecl.h
+++ b/tools/binpac/src/pac_typedecl.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_typedecl_h
 #define pac_typedecl_h
 
diff --git a/tools/binpac/src/pac_utils.cc b/tools/binpac/src/pac_utils.cc
index c68c200af3..5d9b2651e2 100644
--- a/tools/binpac/src/pac_utils.cc
+++ b/tools/binpac/src/pac_utils.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_utils.h"
 
 #include <stdarg.h>
diff --git a/tools/binpac/src/pac_utils.h b/tools/binpac/src/pac_utils.h
index ec70e6be8b..553d791b81 100644
--- a/tools/binpac/src/pac_utils.h
+++ b/tools/binpac/src/pac_utils.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_utils_h
 #define pac_utils_h
 
diff --git a/tools/binpac/src/pac_varfield.cc b/tools/binpac/src/pac_varfield.cc
index e0860f9241..713c584d00 100644
--- a/tools/binpac/src/pac_varfield.cc
+++ b/tools/binpac/src/pac_varfield.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_varfield.h"
 
 void PrivVarField::Prepare(Env* env) { Field::Prepare(env); }
diff --git a/tools/binpac/src/pac_varfield.h b/tools/binpac/src/pac_varfield.h
index 7d1685fd82..e9c0c3df61 100644
--- a/tools/binpac/src/pac_varfield.h
+++ b/tools/binpac/src/pac_varfield.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_varfield_h
 #define pac_varfield_h
 
diff --git a/tools/binpac/src/pac_withinput.cc b/tools/binpac/src/pac_withinput.cc
index 6eb43f03f1..0bffbd34eb 100644
--- a/tools/binpac/src/pac_withinput.cc
+++ b/tools/binpac/src/pac_withinput.cc
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #include "pac_withinput.h"
 
 #include "pac_dataptr.h"
diff --git a/tools/binpac/src/pac_withinput.h b/tools/binpac/src/pac_withinput.h
index fb9827257e..13c30cd680 100644
--- a/tools/binpac/src/pac_withinput.h
+++ b/tools/binpac/src/pac_withinput.h
@@ -1,3 +1,5 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
 #ifndef pac_withinput_h
 #define pac_withinput_h