to help detect whether the user has changed a value in a text component,
  and do an action if it has changed.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD WIDTH="15%"><B><A HREF="ConceptChooserDialog.html">ConceptChooserDialog</A></B></TD>
<TD>Choose to select a concept from a list of concepts.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD WIDTH="15%"><B><A HREF="ConceptFrame2.html">ConceptFrame2</A></B></TD>
<TD>Frame for concept editor.</TD>
</TR>
<TR BGCOLOR="white" CLASS="Table