OpenRead
 Usage
• OpenRead["file"] opens a file to read data from, and returns an InputStream object.
Notes
• OpenRead prepares to read from a file, starting at the beginning of the file. • On systems that support pipes, OpenRead["!command"] runs the external program specified by command, and opens a pipe to get input from it. • If OpenRead does not succeed in opening a particular file or pipe, it generates a message, and returns $Failed. • OpenRead resolves file names according to the procedure described in Section A.6.1. • The function ReadList automatically opens files or pipes that it needs. • OpenRead returns InputStream["name", n], where name is the full name of a file or command, and n is a serial number that is unique across all streams opened in the current Mathematica session. • With the option BinaryFormat->True the stream is opened in binary format, so that no textual interpretation of newlines or other data is done. • New in Version 1.
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