[fengwanyao]

In the edge matrix E, the first and second rows contain indices
of the starting and ending point, the third and fourth rows contain
the starting and ending parameter values, the fifth row contains
the boundary segment number, and the sixth and seventh row
contain the left- and right-hand side subdomain numbers.
第三、四行代表边界边起点、终点的参数值，这个参数值是什么意思？谁的值？
高手帮忙啊