How do I control the arrow length?


```flow
a1=>start: test
a2=>parallel: test
a3=>operation: test
a4=>parallel: test
a5=>operation: test
a6=>parallel: test
a7=>operation: test
a8=>operation: test
b1=>operation: testtesttesttesttesttesttesttesttesttesttest
testtesttesttest
b2=>operation: testtesttesttesttesttesttest
test
b3=>end: test
c1=>condition: test
d1=>operation: test

a1->a2(path1,bottom)->a3->a4(path1,bottom)->a5->a6(path1)->a7->a8(right)->b3
a2(path2,right)->b1
a4(path2,right,)->b2
a6(path2,right)->c1
c1(no)->a7
c1(yes,right)->d1
```