Thanks for that, ~Suv. I'll go with my own Plan B, then, which was to do the bitmap transformation in Photoshop Elements 11 (which I already have on my PC). No point in me installing GIMP and spending time learning to use it. In fact, I found that Photoshop Elements' Image > Transform > Distort was ...

Thanks, Ragastian, but none of the methods in that thread seem suitable. The problem is that the group I'm trying to reshape has a mix of vector elements and bitmaps. Extensions > Modify Path > Perspective doesn't work when there are bitmaps. The other techniques discussed in the thread you referred...

I am trying to draw a picture that includes a computer monitor. The monitor is tilted slightly back and the drawing viewpoint is about 45 degrees off to the left, so I need to apply a perspective effect. It's easy to do when the monitor screen has just a few simple shapes on it: [*] draw what I want...