File Statements

File Commands

	open		open a file
	close		close a file
	put		write alphanumeric text to a file
	get		read alphanumeric text from a file
	write		binary write to a file
	read		binary read from a file
	seek		move to a specified position in a file
	tell		report the current file position
	eof		check for end of file

File Command Syntax

open : streamNo, fileName, ioCapability {, ioCapability }

	ioCapability is one of get, put, read, write, seek, mod
		put or write capability will cause any existing file to be truncated to zero length unless the mod capability is also specified.
		seek capability is needed to use seek or tell commands.

close : streamNo
get : streamNo , getItem { , getItem }
put : streamNo , putItem { , putItem }
read : streamNo [ : fileStatus ] , readItem { , readItem }
write : streamNo[ : fileStatus ] , writeItem {, writeItem }
seek : streamNo , filePosition or seek : streamNo , *
tell : streamNo , filePositionVar
eof ( streamNo ) : boolean (This is a function)

Appending to a Text File

% Open the file for put, but do not erase it
open : streamNo, fileName, put { , get }, mod
% Move the file pointer to the end of the file
seek : streamNo, *