BP1206 is the same solution but with the vertical axis instead of the NW/SE diagonal.
BP1207 is the same solution but with the horizontal axis instead of the NW/SE diagonal.
Adjacent-numbered pages: BP1210 BP1211 BP1212 BP1213 BP1214  *  BP1216 BP1217 BP1218 BP1219 BP1220
stub, notso, handed, leftright, updown, rotate, left-narrow, traditional
Aaron David Fairbanks