Compiling the terminfo descriptions: place the source files somewhere
(e.g. /tmp), then enter
  tic hp48-vt52bis.ti
  tic hp48-vt52bis-n.ti
  tic screen.hp48-vt.ti

Make sure you have a $HOME/.terminfo/ directory before trying this. And
you must have a TERMINFO environment variable that points to your private
terminfo directory. In sh/bash-like shells:
  TERMINFO=~/.terminfo
  export TERMINFO
and in csh/tcsh-like shells:
  setenv TERMINFO=~/.terminfo   
These settings must be added to your startup files (bash: .bash_profile,
tcsh: .tschrc).

The terminfo compiler `tic' will automatically put the compiled
descriptions in the right place under the $HOME/.terminfo/ directory.