// These 4 corner walls are handled in-engine in the original game.
// This is my attempt to do the same thing in the scripts where possible,
// and also by adding some fields to terrain data to make it clear where engine code is needed
begindefineterrain 6; // nw wall
	te_icon_offset_y = -10;
begindefineterrain 7; // ws wall
	te_which_icon = 1;
	te_icon_offset_x = -18;
	te_icon_offset_y = -12;
	te_stamp_icon = 0;
    te_stamp_icon_offset_x = 0;
begindefineterrain 8; // se wall
	te_which_icon = 0;
	te_stamp_icon = 1;
    te_stamp_icon_offset_y = -1;
begindefineterrain 9; // en wall
	te_which_icon = 0;
	te_icon_offset_x = 18;
	te_icon_offset_y = -12;
	te_stamp_icon = 1;

// second set of walls
begindefineterrain 38; 
	import = 2;
	te_ed_which_icon = 50;
begindefineterrain 39; 
	import = 3;
	te_ed_which_icon = 51;
begindefineterrain 40; 
	import = 4;
	te_ed_which_icon = 52;
begindefineterrain 41; 
	import = 5;
	te_ed_which_icon = 53;
begindefineterrain 42; 
	import = 6;
	te_ed_which_icon = 54;
begindefineterrain 43; 
	import = 7;
	te_ed_which_icon = 55;
begindefineterrain 44; 
	import = 8;
	te_ed_which_icon = 56;
begindefineterrain 45; 
	import = 9;
	te_ed_which_icon = 57;