Polar Coordinates from last point

Hi,

In autocad, when can click a point to begin a line, and then  enter something like 20<45, that would draw a line 20 unites an an angle of 45 (to the upper right) from the first point, and each successive point would become the reference point for the next set of polar coordinates.

When I enter polar coordinates in LibreCAD, it draws a line to a point relative to the origin, not from the last point... how can I tell LibreCAD the reference point is the last point rather than the origin?

Thanks,
Mick

@20<45

Thank you --that worked perfectly.