Buttweld toolbar: Plan 90 Reducing Ell 
Victaulic toolbar: Plan 90 Reducing Ell 
Command line: 90RD
Places a 90 degree reducing elbow in the X-Y plane.
last point
Starts the component at the last point of the previously-created component.
Corner
Places the component at the corner of two pipes.
otherEnd
Places the start point of the component on the other end. For this component, this option switches to the reducing side.