Man pages matching name terminfo_variables in section 3ncurses:

terminfo_variables.3ncurses.en	debian 10 / ncurses-doc
terminfo_variables.3ncurses.en	debian 11 / ncurses-doc
terminfo_variables.3ncurses.en	debian 12 / ncurses-doc
terminfo_variables.3ncurses.en	debian 13 / ncurses-doc