When using PDF Manager to extract linework from a pdf, I find it can be difficult to sort through the pdf layers to find what I’m looking for. Often, I can see the lines I want on the pdf and then I turn on and off the preview to narrow down my search.
It would be nice if I could use the pdf vectors command to select one line from plan view and that the layer that line is on is added for extraction. For example, If I wanted to only import existing contours, I could click on one line and it selects the layer that all the contours are on.