C-a .dumptermcap
Write the termcap entry for the virtual terminal optimized for the
currently active window to the file “.termcap” in the user's
“$HOME/.screen” directory (or wherever screen stores its sockets; see
the “Files” section in the man page). This termcap entry is
identical to the value of the environment variable $TERMCAP that is set up
by screen for each window. For terminfo based systems you will need
to run a converter like captoinfo and then compile the entry with
tic.
None yet.