I'm puzzled about the behaviour of fopen with the ccs= options. The
table below iswhat I'm seeing. I am opening a file with the fopen option
shown, then writing to it with fputws. What I want to happen it to read
either Ascii or Unicode files as Unicode, but to write the files as
Unicode when it is a new or compiletely overwritted file. Reading works
fine, writing does not.

Existing     fopen                    Resulting
File         option                   File
---------------------------------------------------
No file      w+tS, ccs=UNICODE        Ascii
No file      wtS, ccs=UNICODE         UTF-16LE
Ascii        w+tS, ccs=UNICODE        Ascii
Ascii        wtS, ccs=UNICODE         UTF-16LE
Unicode      w+tS, ccs=UNICODE        Ascii
Unicode      wtS, ccs=UNICODE         UTF-16LE

I do not understand why "w+" would be different from "w". Why does it
work this way?

 Thanks,
   ++PLS