ui/src/main/java/ucar/util/prefs/ui/PrefPanel.java
public Field.TextArea addTextAreaField(String fldName, String label, String def, int nrows) {
    Field.TextArea fld = new Field.TextArea(fldName, label, def, nrows, storeData);
    addField( fld);
    return fld;
  }
public Field.TextArea addTextAreaField(String fldName, String label, String def, int nrows) {
    Field.TextArea fld = new Field.TextArea(fldName, label, def, nrows, storeData);
    addField( fld);
    return fld;
  }
Add a TextArea field.
@param fldName the name to store the data in the PersistenceManagerData
@param label used as the label on the panel
@param def default value
@param nrows number of rows