Fetch a substring of the input text, as specified by start and end offsets.
returnedStr = inputrange(start_num,end_num)
returnedStr - type: str
start_num - type: num
end_num - type: num
Returns a substring copied from the input text.
While this function isn't strictly necessary, it represents a convenience and an optimization. (One could fetch the text of the root node and use strpiece to fetch the desired substring.)
Offsets are zero based.
G("str") = inputrange(0,9); # Fetch the first 10 characters of the input text as a string.