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+File and Time Extensions for TinyScheme (FTX) 1.0  [August, 2004]
+
+Based on the TinyScheme Extensions (TSX) 1.1  [September, 2002]
+(c) 2002 Manuel Heras-Gilsanz (manuel@heras-gilsanz.com)
+
+This software is subject to the license terms contained in the
+LICENSE file.
+
+
+TSX FUNCTIONS
+
+TSX incorporates the following functions:
+
+*File system (included if HAVE_FILESYSTEM is defined in tsx.h)
+
+Scheme already defines functions to read and write files. These
+functions allow access to the filesystem to check if a certain
+file exists, to get its size, etc.
+
+In addition to these functions, a string constant DIR-SEPARATOR
+has been defined. It should be used in scripts which build file
+names that include one or more directories to keep the scripts
+portable to different operating systems.
+
+(file-exists? filename)
+        filename: string
+
+        This function returns #t if the indicated file exists, and
+        #f if it does not exist or if it is not accessible to the
+        requesting user. Accessibility is based on the real user
+        and group ID rather than the effective user ID and group ID.
+
+(file-type filename)
+        filename: string
+
+        This function returns a value based on the file type. It
+        returns FILE_TYPE_FILE (1) for regular files, FILE_TYPE_DIR
+        (2) for directories, and FILE_TYPE_LINK (3) for symbolic
+        links. The value FILE_TYPE_OTHER (0) is returned if the file
+        is of some other type, does not exist, or if the user does
+        not have sufficient privileges to allow the file type to be
+        determined.
+
+(file-size filename)
+        filename: string
+
+        This function returns the size (in bytes) of the
+        indicated file, or #f if the file does not exists or
+        is not accessible to the requesting user.
+
+(file-delete filename)
+        filename: string
+
+        Removes the specified file. It returns #t if the operation
+        succeeds, or #f otherwise (e.g., because the file is
+        read-only, or because the file does not exist).
+
+(dir-open-stream path)
+        path: string
+
+        Opens a "directory stream" on the provided directory path.
+        This stream will provide all the files within the directory,
+        using the function read-dir-entry. The stream should be closed
+        at the end with dir-close-stream.
+
+(dir-read-entry dirstream)
+        dirstream: directory stream, obtained with dir-open-stream.
+
+        It returns the name of the following directory entry, or eof
+        if all the entries were provided. Check the return value with
+        with eof-object?.
+
+(dir-rewind dirstream)
+        dirstream: directory stream, obtained with dir-open-stream.
+
+        Resets the given directory stream. The next call to dir-read-entry
+        will return the first entry again. It returns #t if the operation
+        succeeds, or #f otherwise (ie. dirstream not valid)..
+
+(dir-close-stream dirstream) 
+        dirstream: directory stream, obtained with dir-open-stream.
+
+        Close directory stream. No further calls to read-dir-entry should
+        be performed.
+
+
+*Time (available if HAVE_TIME is defined in tsx.h)
+
+(time)
+        Returns the current local time, as a list of integer
+        containing:
+          (year month day-of-month hour min sec millisec)
+        The year is expressed as an offset from 1900.
+
+(gettimeofday)
+        Returns a list containing the number of seconds from
+        the beginning of the day, and microseconds within the
+        current second.
+
+(usleep microsec)
+        microsec: integer
+
+        Suspends execution of the calling thread during the
+        specified number of microseconds.
+
+
+END
+