include start_color
call OK init_pair 3 $COLOR_RED $COLOR_BLUE
call OK mvaddch 5 8 `\000R`
call OK mvchgat 5 6 10 $REVERSE 3 NULL
call OK refresh
compare mvchgat.chk
call OK mvaddch 8 77 `\000T`
call OK mvchgat 8 75 10 $UNDERSCORE 3 NULL
call OK refresh
compare mvchgat2.chk