If I had back all the hours I have spent editing label lines out of diagrams, I wouldn’t need to request a sabbatical. And the classier the diagram, the harder it is to remove those pesky lines; you can’t just draw over them with the background color, when the background color is a gradient.
Today I found a pretty good workaround using Paint. The trick is to draw over the line using the pencil brush option. Not the pencil tool; the pencil option under ‘Brushes.’ Thusly:
The image I'm editing is from Wikipedia, used under a Creative Commons license
After selecting that option, use the dropper tool to pick up the color from a pixel right next to the offending diagram line. Then brush over the line, back and forth, marveling as it gradually disappears.
Here it is, without those pestiferous label lines!
It’s not perfect, but it was a lot easier than copying bits of the background and patching them over the lines!
