--- a/Timestamp.st	Thu May 10 14:52:51 2018 +0200
+++ b/Timestamp.st	Thu May 10 14:57:57 2018 +0200
@@ -115,6 +115,10 @@
             the picos are to be added to the millis, to get picos within the second.
             this is ugly, but makes all the rest backward compatible.
 
+        The typical OS-time resolution is in the milli- or microsecond range.
+        External logging hardware may generate timestamps in the micro- or nanosecond range.
+        Picosecond resolution should be good enough for almost any application (at least for the near future).
+
     [author:]
         Claus Gittinger