Section 7) "Test system" 
of http://www.opendylan.org/building-win32-cygwin.phtml 
states
   Test the system with a simple 'hello world' application:

   cd
   make-dylan-app hello
   cd hello
   make
   ./hello

BUT
   The installation process does not provide
   a make-dylan-app in the directory usr/local

Recommended updates
   1) Eiter the installation process adds make-dylan-app to 
      the directory usr/local 
      or http://www.opendylan.org/building-win32-cygwin.phtml 
      mentions that you have to copy make-dylan-app
      from ~/gd/src/tools/shared-misc
      to usr/local

   2) Section 7)  Could have a link to 
      http://www.opendylan.org/gdref/gduser/ch03.html#gduser-make-dylan-app