Buttweld toolbar: Side 90 SR Ell 
Victaulic toolbar: Side 90 SR Ell 
Command line: H90SR
Places a 90 degree short radius elbow normal to the X-Y plane.
last point
Starts the component at the last point of the previously-created component.
Up
Places the elbow bend in the positive Z direction.
Down
Places the elbow bend in the negative Z direction.