Hi @alj, Welcome to the Affinity Forums I can confirm that this can be done within Affinity Photo by holding down a finger on screen whilst using the Paint Brush tool, to constrain it to straight lines only. Tap once on the canvas where you want the stroke to start, then using your other hand press and hold one finger anywhere on the canvas to enable the constraint feature. Now, with this finger held down, click anywhere else on the canvas and you should find the strokes begi