I've been following a Xara tutorial recently where the instruction is to type a 6 degree rotation into the 'Angle of selection' box. This is to get a 6 degree rotation of a vertical line. When a vertical line is drawn, the figure in the 'Angle of selection' box is given as 90 degrees (because it's 90 degrees off the horizontal?). Typing in 6 degrees and pressing 'Enter', rotates the line to 6 degrees off the horizontal position and not the vertical as desired.

Is it possible to set the 'Angle of selection' box so that a vertical line is zero degrees as a starting point?