V10/ncurses/screen/boolvals

    char
	auto_left_margin,	/* cub1 wraps from column 0 to last column */
	auto_right_margin,	/* Terminal has automatic margins */
	beehive_glitch,		/* Beehive (f1=escape, f2=ctrl C) */
	ceol_standout_glitch,	/* Standout not erased by overwriting (hp) */
	eat_newline_glitch,	/* newline ignored after 80 cols (Concept) */
	erase_overstrike,	/* Can erase overstrikes with a blank */
	generic_type,		/* Generic line type (e.g. dialup, switch). */
	hard_copy,		/* Hardcopy terminal */
	has_meta_key,		/* Has a meta key (shift, sets parity bit) */
	has_status_line,	/* Has extra "status line" */
	insert_null_glitch,	/* Insert mode distinguishes nulls */
	memory_above,		/* Display may be retained above the screen */
	memory_below,		/* Display may be retained below the screen */
	move_insert_mode,	/* Safe to move while in insert mode */
	move_standout_mode,	/* Safe to move in standout modes */
	over_strike,		/* Terminal overstrikes */
	status_line_esc_ok,	/* Escape can be used on the status line */
	teleray_glitch,		/* Tabs destructive, magic so char (t1061) */
	tilde_glitch,		/* Hazeltine; can't print ~'s */
	transparent_underline,	/* underline character overstrikes */
	xon_xoff,		/* Terminal uses xon/xoff handshaking */
	lastbool;