your comment got through to webmaster - thanks for attending to it - ive a 
follow suggest

"all its input" is improper grammar - that should be "all of its input"

also, i would either quote or hyphenate "the end of file string"; because that 
phrase is not merely descriptive - it is a very precise technical term, taken 
as a whole - just IMHO, but i would rather see something like one of these:

the end-of-file string
the "end of file" string
the End Of File string




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