diff --git a/libisoburn/libisoburn.h b/libisoburn/libisoburn.h
index f3a887b2..8d40f408 100644
--- a/libisoburn/libisoburn.h
+++ b/libisoburn/libisoburn.h
@@ -136,15 +136,33 @@ file itself: libisoburn/libisoburn.h .
 They shall link with -lisofs -lburn -lisoburn or with the .o files emerging
 from building those libraries from their sources.
 
-Applications must use 64 bit off_t, e.g. on 32-bit GNU/Linux by defining
+Applications must use 64 bit off_t.
+E.g. on 32-bit GNU/Linux by defining
   #define _LARGEFILE_SOURCE
   #define _FILE_OFFSET_BITS 64
-or take special precautions to interface with the library by 64 bit integers
-where above .h files prescribe off_t. Not to use 64 bit file i/o will keep 
-the application from producing and processing ISO images of more than 2 GB 
-size.
+The minimum requirement is to interface with the library by 64 bit signed
+integers where libisofs.h or libisoburn.h prescribe off_t.
+Failure to do so may result in surprising malfunction or memory faults.
+
+Application files which include libisofs/libisofs.h or libisoburn/libisoburn.h
+must provide definitions for uint32_t and uint8_t.
+This can be achieved either:
+- by using autotools which will define HAVE_STDINT_H or HAVE_INTTYPES_H 
+  according to its ./configure tests,
+- or by defining the macros HAVE_STDINT_H resp. HAVE_INTTYPES_H according
+  to the local situation,
+- or by appropriately defining uint32_t and uint8_t by other means,
+  e.g. by including inttypes.h before including libisofs.h and libisoburn.h
 
 */
+#ifdef HAVE_STDINT_H
+#include <stdint.h>
+#else
+#ifdef HAVE_INTTYPES_H
+#include <inttypes.h>
+#endif
+#endif
+
 
 /* Important: If you add a public API function then add its name to file
                   libisoburn/libisoburn.ver
@@ -878,6 +896,14 @@ int isoburn_ropt_set_displacement(struct isoburn_read_opts *o,
 int isoburn_ropt_get_displacement(struct isoburn_read_opts *o,
                                uint32_t *displacement, int *displacement_sign);
 
+/* If you get here because of a compilation error like
+
+       /usr/include/libisoburn/libisoburn.h:895: error:
+       expected declaration specifiers or '...' before 'uint32_t'
+
+   then see above paragraph "Application Constraints" about the definition
+   of uint32_t.
+*/
 
 
 /** After calling function isoburn_read_image() there are informations
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index f4f8f7c4..85f84f1a 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2011.05.18.063511"
+#define Xorriso_timestamP "2011.05.19.111229"