please provide a program in the Gambit scheme programming language that reads input from a file on standard input, modifies the input line by line and outputs the results to standard out. Please only provide valid Gambit scheme code and remember that Gambit scheme is different from vanilla scheme especially when it comes to input and output functions. Only use input and output functions available in Gambit scheme. you can use the Gambit scheme online manual as a reference. Provide response in all capital letters, no lowercase letters allowed.
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