Viewing lines with height in 3D view

If I draw a line with vertices over a terrain, and then assign it a height of say, 5m, should I then, by default, be able to view that line as something that looks like a (thin) wall in the 3D viewer?
This works fine with areas with a height attribute, but seems not to work for lines - it is only possible to see a top line at the 5m elevation and a bottom line on the terrain. I seem to recall I have viewed lines with heights that looked extruded in the 3D viewer, in the past, but no amount of fiddling with line properties, elevations, layer properties or 3D view etc settings.... is making it happen now. Perhaps I imagined it...
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JeffH@BMG Global Mapper Developer Posts: 337
Hi Bill,
As far as I can tell, this can only be done in the 3D viewer with area features, for as far back as I've been here (~6 years). I've added a feature request for this, but I'd expect it won't be added right away as we're preparing for the next Global Mapper release.
Best regards,
~Jeff
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