Automatic Margins

[Bryan Christ]

if capability 'am' is assumed to mean

1. x=width
2. addch() & wrap (am)
3. x=0,y=y+1

then does 'bw' mean..

1. x=0
2. cub1 & wrap (bw)
3. x=width, y=y-1

?

the behavior that auto_right_margin moves the cursor y+1 is not
documented and auto_left_margin is also not specific.