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  1. Symbol(s) used to open a file for appending
  2. Symbol(s) used to open a file for reading and writing, without truncating the file
  3. Function that returns 13-element list of data about a particular file.
  4. Syntax to use print to write "this is text" to a file, via filehandle FOO
  5. Syntax to close file handle FOO
  6. Operator to determine if a file exists
  7. Symbol(s) used to open a file for reading and writing, truncating the file first
  8. Keyword Used to exit a program if an error occurs
  9. Function that returns 13-element list of data about a symbolic link*

    *on operating systems that support symbolic links
  10. Function to position a file pointer within filehandle FOO, at byte number 256, relative to end of file
  11. Open filename.txt for reading, via filehandle FOO
  12. Function to position a file pointer within filehandle FOO, at byte number 256, relative to current position of file pointer
  13. Symbol(s) used to open a file for writing
  14. Function to return position of file pointer within a filehandle FOO
  15. Operator to determine if a file is readable
  16. Operator to determine if a file is writeable
  17. Function to position a file pointer within filehandle FOO, at byte number 256, relative to start of file
  18. Function to return a single character from filehandle FOO
  19. Syntax to read 256 bytes from filehandle FOO, beginning at byte number 16, and held in buffer $buffer
  1. a print FOO "this is text";
  2. b -r
  3. c seek(FOO, 256, 1);
  4. d seek(FOO, 256, 0);
  5. e getc(FOO);
  6. f lstat
  7. g seek(FOO, 256, 2);
  8. h die
  9. i -e
  10. j read (FOO, $buffer, 256, 16);
  11. k stat
  12. l >>
  13. m >
  14. n +<
  15. o -w
  16. p close(FOO);
  17. q tell(FOO);
  18. r +>
  19. s Open(FOO, "filename.txt");