Elements in nested stitches can have the same name

So, in order to visit **gather** of **Stitch2**, I have to write its path, however, the name is enough for **gather** in **Stitch1**.
If I create an element with the name **gather** in the **Knot**'s content, I'll receive an error.

```
-> Knot

=== Knot
Knot's text
-> gather -> Stitch2.gather -> END

= Stitch1
- (gather) Stitch1's gather text
->->

= Stitch2
- (gather) Stitch2's gather text
->->
```

> Knot's text
> Stitch1's gather text
> Stitch2's gather text
> End of story