I've been asked to combine a kind of bitmap image of a 'system hookup' with some PCBs and bits of dodgy Veroboard plus a bunch of IDC connectors. It's hard to document it sensibly.
To guide me, I'd like to be able to place an image of a board on a canvas, and connect handles at fairly arbitrary positions (it would be fine if the image had to fit into a rectangle, and it'd be OK if I could only attach to the edges).
From these handles then I'd like to drag out things like dashed lines with labels and so forth - thereby showing wires etc. Basically the aim is to rough-up an approximation of the assembly but not in a formal schematic sense. It would be possible to do it in KiCad, but it'd take me too long and maybe not give the type of result I'm after just now.
Any suggestions for likely software that would run on Windows? There was something called DIA I seem to recall.