Newt is a windowing toolkit for text mode built from the slang
   library. It allows color text mode applications to easily use
   stackable windows, push buttons, check boxes, radio buttons, lists,   
   entry fields, labels, and displayable text. Scrollbars are supported,
   and forms may be nested to provide extra functionality.

WWW: http://www.redhat.com/support/manuals/archive/RHL-5.1-Installation-Guide/ manual/doc102.html

Besides the newt library, this port provides whiptail, which may
be used from shell scripts similarly to Savio Lam's "dialog". Newt
provides the textual interface for the Red Hat and Debian boot
disks.