«Single dots can be created by using Ctrl+Left Mouse Click. Possibly related: the pen and pencil tools can be used to create dots with a single click: Your question #251261 on Inkscape changed: Thank you once more, excuse me for my terrible English and regards

The enclosed svg file shows several groups of springs, try to change the length, main diameter or wire diameter in Inkscape and you will see, why did I take this stupid question. I want to use the ''points'' to make animated gifts with springs. I found the solution: you have to draw a short line, then reduce the distance between the nodes to 0. If you deform the circle, the shape and the size will change, but in the case of a 0 length line the aspect remains circle. The difference is on transformation of the drawing.

According to Euclid these are equal, but in Inkscape there are different. I wanted to have not a circle with 0 radius, but a line with 0 length. Thank you for helping me to make sure, that this special element is not specified in Inkscape.

Inkscape drawing