Example schematic, a circuit with a battery, resistor and LED (GAF file created with GSchem):
v 20130925 2 C 40000 40000 0 0 0 title-B.sym C 46900 47700 1 0 0 battery-1.sym { T 47200 48600 5 10 0 0 0 0 1 device=BATTERY T 47200 48200 5 10 1 1 0 0 1 refdes=B? T 47200 49000 5 10 0 0 0 0 1 symversion=0.1 } C 45800 46300 1 90 0 resistor-2.sym { T 45450 46700 5 10 0 0 90 0 1 device=RESISTOR T 45500 46500 5 10 1 1 90 0 1 refdes=R? } C 46900 44800 1 0 0 led-3.sym { T 47850 45450 5 10 0 0 0 0 1 device=LED T 47350 45350 5 10 1 1 0 0 1 refdes=D? } N 47600 47900 47800 47900 4 N 47800 47900 47800 45000 4 N 46900 45000 45700 45000 4 N 45700 45000 45700 46300 4 N 45700 47200 45700 47900 4 N 45700 47900 46900 47900 4 v 20050820 1 P 0 200 200 200 1 0 0 { T 150 250 5 8 1 1 0 6 1 pinnumber=1 T 200 150 5 8 0 1 0 8 1 pinseq=1 T 200 200 9 8 0 1 0 0 1 pinlabel=+ T 350 200 5 8 0 1 0 2 1 pintype=pwr } P 700 200 500 200 1 0 0 { T 550 250 5 8 1 1 0 0 1 pinnumber=2 T 550 150 5 8 0 1 0 2 1 pinseq=2 T 500 200 9 8 0 1 0 6 1 pinlabel=- T 350 200 5 8 0 1 0 8 1 pintype=pwr } L 300 400 300 0 3 0 0 0 -1 -1 L 400 300 400 100 3 0 0 0 -1 -1 T 300 900 5 10 0 0 0 0 1 device=BATTERY L 500 200 400 200 3 0 0 0 -1 -1 L 200 200 300 200 3 0 0 0 -1 -1 T 300 500 8 10 1 1 0 0 1 refdes=B? T 300 1100 5 10 0 0 0 0 1 description=Battery T 300 700 5 10 0 0 0 0 1 numslots=0 T 300 1300 5 10 0 0 0 0 1 symversion=0.1 v 20081221 2 P 900 100 750 100 1 0 0 { T 800 150 5 8 0 1 0 0 1 pinnumber=2 T 800 150 5 8 0 0 0 0 1 pinseq=2 T 800 150 5 8 0 1 0 0 1 pinlabel=2 T 800 150 5 8 0 1 0 0 1 pintype=pas } P 0 100 150 100 1 0 0 { T 100 150 5 8 0 1 0 0 1 pinnumber=1 T 100 150 5 8 0 0 0 0 1 pinseq=1 T 100 150 5 8 0 1 0 0 1 pinlabel=1 T 100 150 5 8 0 1 0 0 1 pintype=pas } B 150 0 600 200 3 0 0 0 -1 -1 0 -1 -1 -1 -1 -1 T 400 350 5 10 0 0 0 0 1 device=RESISTOR T 200 300 8 10 1 1 0 0 1 refdes=R? v 20031231 1 L 600 0 600 400 3 0 0 0 -1 -1 L 600 0 300 200 3 0 0 0 -1 -1 T 950 650 5 10 0 0 0 0 1 device=LED L 300 200 600 400 3 0 0 0 -1 -1 L 300 0 300 400 3 0 0 0 -1 -1 P 0 200 200 200 1 0 0 { T 200 150 5 8 0 1 180 0 1 pinnumber=1 T 800 650 9 8 0 1 180 0 1 pinlabel=CATHODE T 900 850 5 8 0 0 180 0 1 pintype=pas T 600 950 5 8 0 0 180 0 1 pinseq=1 } P 900 200 700 200 1 0 0 { T 800 150 5 8 0 1 180 0 1 pinnumber=2 T 1400 150 9 8 0 1 180 0 1 pinlabel=ANODE T 1000 350 5 8 0 0 180 8 1 pintype=pas T 1000 250 5 8 0 0 180 8 1 pinseq=2 } L 200 200 300 200 3 0 0 0 -1 -1 L 600 200 700 200 3 0 0 0 -1 -1 T 450 550 8 10 1 1 0 0 1 refdes=D? L 500 400 400 500 3 0 0 0 -1 -1 L 400 400 300 500 3 0 0 0 -1 -1 L 300 500 325 450 3 0 0 0 -1 -1 L 300 500 350 475 3 0 0 0 -1 -1 L 400 500 425 450 3 0 0 0 -1 -1 L 400 500 450 475 3 0 0 0 -1 -1 T 950 550 5 10 0 0 0 0 1 description=Generic LED T 950 450 5 10 0 0 0 0 1 numslots=0