+ --enable-ext-putwin
+ Modify the file-format written by putwin() to use printable text rather
+ than binary files, allowing getwin() to read screen dumps written by
+ differently-configured ncurses libraries. The extended getwin() can
+ still read binary screen dumps from the "same" configuration of
+ ncurses. This does not change the ABI (the binary interface seen by
+ calling applications).
+