Cansee
cansee <x1> <y1> <z1> <sect1> <x2> <y2> <z2> <sect2> <returnvar>
Returns 1 if there is a line of sight between the two points.
cansee <x1> <y1> <z1> <sect1> <x2> <y2> <z2> <sect2> <returnvar>
Returns 1 if there is a line of sight between the two points.