usepackage("amsmath,amssymb");
usepackage("inputenc","utf8");
usepackage("icomma");
usepackage("esvect");
usepackage("mathrsfs");

import math;
import graph_pi;
import graph3;
import gm_probabilitytree;
import gm_tableaux;
import geometry;
import inequations_cg;
import OG;
import patterns;

// defaults
DefaultHead=HookHead;

// functions
real w=linewidth();

marker croix1(pen sColor)
{
   return marker(scale(2)*rotate(45)*cross(4), sColor);
}

marker croix2(pen sColor)
{
   return marker(scale(2)*cross(4), sColor);
}

add("hachures1",hatch(H=3mm,dir=SE,black));