适用范围:
1. 缺点:
- 比较小众
实例:
a = "a"
b = "b"
c.x = "c.x"
c.y = "c.y"
[d]
x = "d.x"
y = "d.y"
child::[[e]]
x = "e[0].x"
y = "e[0].y"
child::[[e]]
x = "e[1].x"
y = "e[1].y"
[f.A]
x.y = "f.A.x.y"
[f.B]
x.y = """
f.
B.
x.
y
"""
[f.C]
points = [
{ x=1, y=1, z=0 },
{ x=2, y=4, z=0 },
{ x=3, y=9, z=0 },
]