Web Features Learning Mode

What is the maximum limit of the file size that a user can upload according to the code snippet given below?

<form enctype="multipart/form-data" action="index.php" method="post">
   <input type="hidden" name="MAX_FILE_SIZE" value="5000" />
   <input name="filedata" type="file" />
   <input type="submit" value="Send file" />
 </form>