<p><img alt="" src="<?php echo $CFG->wwwroot?>/mod/dialogue/icon.gif" />&nbsp;<b>Dialogues</b></p>
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This module provides a simple communication method between pairs of users.
teacher can open an dialogue with a student, a student can open
dialogue with a teacher, and (optionally) a student can open a 
dialogue with another student. A teacher or student can be involved 
in many on-going dialogues at any time.
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