Critical Hit table

CH	Result
0	md
1	2*d
2	2*md
3	3*d
4	3*md
5+	4*d

d   (normal-damage)

This is just the Ht damage.

md(maximum-damage)   

maximum damage: this is the damage if all dice of the damage roll would roll the maximum (1d=6, 1D=10) plus any bonus.

2*/3*/4*(multiple damage)    

  multiply the md/d by this value