include ibm-437
unmap 0x80-0xAF
unmap 0xE0-0xF0
map 0x80-0x90 to U+0391
map 0x91-0x97 to U+03A3
map 0x98-0xA8 to U+03B1
map 0xA9 to U+03C3
map 0xAA to U+03C2
map 0xAB-0xAF to U+03C4
map 0xE0 to U+03C9
map 0xE1-0xE3 to U+03AC
map 0xE4 to U+03CA
map 0xE5 to U+03AF
map 0xE6-0xE7 to U+03CC
map 0xE8 to U+03CB
map 0xE9 to U+03CE
map 0xEA to U+0386
map 0xEB-0xED to U+0388
map 0xEE to U+038C
map 0xEF-0xF0 to U+038E