code: public boolean isEditableDisplay(final TargetMode _mode)
      {
          boolean ret = false;
          if (this.mode2display.containsKey(_mode)) {
              ret = this.mode2display.get(_mode).equals(Field.Display.EDITABLE);
          }
          return ret;
      }
docs: Is this field editable in the given target mode. If not explicitly set in
  the definition following defaults apply:
  <ul>
  <li>ModeConnect: false</li>
  <li>ModeCreate: false</li>
  <li>ModeView: false</li>
  <li>ModePrint: false</li>
  <li>ModeEdit: false</li>
  <li>ModeSearch: false</li>
  </ul>
  
  @param _mode target mode
  @return true if editable in the given mode, else false