delete gindexband
graph gindexband.band   i_la_b i_pa_b  i_b i8_b 

gindexband.setelem(1) legend("Band: Laspeyres") fillcolor(black) 'symbol(circle) 
gindexband.setelem(2) legend("Paasche")    fillcolor(black) 
gindexband.setelem(3) legend("Band: Upper Bound Index")  fillcolor(gray) 
gindexband.setelem(4) legend(" 0.8 - 1")  fillcolor(gray) 
gindexband.draw(shade, bottom) 2005 2012