Imported from libpng-1.4.0beta7.tar
diff --git a/scripts/pngos2.def b/scripts/pngos2.def
index ab0df83..b3f4106 100644
--- a/scripts/pngos2.def
+++ b/scripts/pngos2.def
@@ -2,7 +2,7 @@
 ; PNG.LIB module definition file for OS/2
 ;----------------------------------------
 
-; Version 1.4.0beta6
+; Version 1.4.0beta7
 
 LIBRARY		PNG
 DESCRIPTION	"PNG image compression library for OS/2"
@@ -173,6 +173,7 @@
   png_write_png
   png_write_row
   png_write_rows
+  png_write_sig
   png_read_init_2
   png_write_init_2
   png_access_version_number