Wow thank you for that! Experimented a little with it and its highly interesting so I'm glad to discover it, however its not what I'm looking for now.
Let me rephrase what I need in retrospect and what bothers me with the paint.net line/curve tool so you can possibly enlighten me with another alternative: Upon drawing a line four control nubs appear on the line allowing for manipulation by clicking and dragging if a curve is desired. To me the four nubs are impractical as opposed to ms paint approach where a line is drawn and if a curve is desired you click away two times towards the direction you want the curve at and its done, no nubs whatsoever. Now, I don't hate the nubs per say but here is the deal: I need to draw many curved lines in succession while the new line should begin where the previous line ends. In order to commit a line/curve to the active layer we have 4 options, 1. Press the enter key (which is okay but when you have to draw hundreds of lines in succession, clicking enter every time is really a hustle and not having to do so like in ms paint would be liberating), 2. Click outside of the bounding box of the current line (which is also an extra step, plus it results in an unwanted dot painted), 3. click finish in the tool bar (another extra step) or 4. Draw a new line/curve (that is the ideal but since the next line should begin where the previous ends, a nub at the edge is always preventing me to draw the new one which will have me resort in one of the 3 time consuming alternatives). If there is a way to have only the two middle nubs appear when drawing a line that would be good. From what I've searched I understand its probably not possible but thought I'd take a chance here anyway. In fact if there is no such thing I would like to encourage someone experienced to make happen! I recognize that the nubs do have merits but I imagine it shouldn't be that hard to have an option of having less of them on the line and I bet others would find it useful as well!
I'm open to any other alternative I may be unaware of.