Make [xy][+-] work the same as e[xy][+-]
Make [xy][+-] work the same as e[xy][+-]

gdeda/openomf,pmjdebruijn/openomf,gdeda/openomf,gdeda/openomf,omf2097/openomf,omf2097/openomf,pmjdebruijn/openomf,omf2097/openomf,pmjdebruijn/openomf