I know that I cannot join non-endnodes in Inkscape due to the SVG spec.
I know how to join two different nodes into one merged one ( How to Connect Bezier Curves in Inkscape? ).
But how can I join three end point of this
into a single end point? I want to be able to move either entire line, or just shared node without breaking T junction apart.
I even tried selecting separate color for each way, but it seems impossible to merge nodes without merging lines.
To avoid XY-problem: I want to make lines between other lines that reach them exactly. Neither going farther, neither going too close. SVG image will be send to a laser cutter, so I prefer to be 100% exact.
In addition I want to keep further modification easy. I want to be able to move grouped object and move all attached ways with it, stretching them as needed.
I thought that I can achieve this by merging nodes.