new entry "What versions of Windows are supported?"

1 files changed, 16 insertions, 1 deletions

diff --git a/winsup/doc/what.texinfo b/winsup/doc/what.texinfo
index f5f2793..1db6cf9 100644
--- a/winsup/doc/what.texinfo
+++ b/winsup/doc/what.texinfo
@@ -1,7 +1,7 @@
 @chapter What is it?
 
 The Cygwin tools are ports of the popular GNU development tools for
-Windows 9x/ME/NT/2000.  They run thanks to the Cygwin library which
+Microsoft Windows.  They run thanks to the Cygwin library which
 provides the UNIX system calls and environment these programs expect.
 
 With these tools installed, it is possible to write Win32 console or
@@ -16,6 +16,21 @@ interest in the many standard Unix utilities provided with the package.
 They can be used both from the bash shell (provided) or from the
 standard Windows command shell.
 
+@section What versions of Windows are supported?
+
+Wait a minute... Cygwin is only @emph{supported} if you are paying for
+it, such as through a support contract with Red Hat.  For information
+about getting a Red Hat support contract, see
+@file{http://www.redhat.com/products/support/cygwin/}.
+
+That said, Cygwin can be expected to run on all modern versions of
+Windows, except Windows CE.  This includes Windows 95/98/ME/NT/2000,
+and, once it is officially released by Microsoft, Windows XP.
+
+Keep in mind that Cygwin can only do as much as the underlying OS
+supports.  Because of this, Cygwin will behave differently, and
+exhibit different limitations, on the various versions of Windows.
+
 @section Where can I get it?
 
 The main WWW page for the Cygwin project is