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Extracting text from PostScript

/X 0 def


/protoshow {

currentpoint pop

X sub 5 gt { ( ) print } if

dup print

systemdict exch get exec

currentpoint pop /X exch def

} def

/show { /show protoshow } def

/kshow { /kshow protoshow } def

/widthshow { /widthshow protoshow } def

/ashow { /ashow protoshow } def

/awidthshow { /awidthshow protoshow } def



Figure 4.20d: Extracting text from PostScript; Catering for variants of the show operator