2960 FOR C = 68 TO 113 STEP 15: HPLOT 207,C TO 270,C: NEXT : FOR C = 207 TO 270 STEP 21: HPLOT C,68 TO C,113: HPLOT C -1,68 TO C -1,113: HPLOT C -2,68 TO C -2,113: NEXT
2970 HPLOT 205,67 TO 270,67: HPLOT 205,114 TO 270,114: HPLOT 203,65 TO 272,65 TO 272,116 TO 203,116 TO 203,65