When compressing, in accordance with {HEAD ~ a compression method} which is designated by {TAIL ~ extra character registration information}, the relevant compression method is selected and the bit map data is compressed 
is designated by
When compressing , in accordance with { HEAD ~ a compression method } which is designated by { TAIL ~ extra character registration information } , the relevant compression method is selected and the bit map data is compressed
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH