Hi Anna,

The case of the problem (you couldn't see polylines when you created them from hatches) is that the current layer was turned off, hatches were created, but they were on layer that was invisible.

I sent your drawing back with a couple of polylines (hatch boundaries) created with a button on Hatch Visor. I created new Layer «$POLYLINES», made it current and ON, then I used «recreate hatch boundary» button in Hatch Visor to create hatch boundaries as polylines.