I.e. January is 0, not 1; Sunday is 0, not 1; January 1st is 0, not 1. The
year (C<year>) is given in years since 1900. I.e., the year 1995 is 95; the
year 2001 is 101. Consult your system's C<strftime()> manpage for details
-about these and the other arguments. The given arguments are made consistent
+about these and the other arguments.
+If you want your code to be portable, your format (C<fmt>) argument
+should use only the conversion specifiers defined by the ANSI C
+standard. These are C<aAbBcdHIjmMpSUwWxXyYZ%>.
+The given arguments are made consistent
by calling C<mktime()> before calling your system's C<strftime()> function.
The string for Tuesday, December 12, 1995.