6.3.3 Error Bars (TYPE2)

UVERB (N,X,Y1,Y2) Draws error bars.
UHERB (N,X1,X2,Y) Draws error bars.
UVEFBZ(N,X,Y1,Y2,ITYPE,INDEX,RSIZE) Draws error bars specifying attributes.
UHEFBZ(N,X1,X2,Y,ITYPE,INDEX,RSIZE) Draws error bars specifying attributes.