or gate close path and draw links before nodes #23
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Two tiny changes to (microscopically :-) )improve image appearance
eg
![Screenshot 2021-03-28 213726](https://user-images.githubusercontent.com/4541024/112747448-0903ff00-9012-11eb-89eb-378a699f4f5d.png)
Before:
After:
![Screenshot 2021-03-28 220221](https://user-images.githubusercontent.com/4541024/112747453-13be9400-9012-11eb-965d-91c4744beabb.png)