code: public boolean setMargins(float marginLeft, float marginRight,
  			float marginTop, float marginBottom) {
          this.marginLeft = marginLeft;
          this.marginRight = marginRight;
          this.marginTop = marginTop;
          this.marginBottom = marginBottom;
          DocListener listener;
  		for (Iterator iterator = listeners.iterator(); iterator.hasNext();) {
              listener = (DocListener) iterator.next();
  			listener.setMargins(marginLeft, marginRight, marginTop,
  					marginBottom);
          }
          return true;
      }
docs: Sets the margins.
  
  @param marginLeft
  the margin on the left
  @param marginRight
  the margin on the right
  @param marginTop
  the margin on the top
  @param marginBottom
  the margin on the bottom
  @return	a <CODE>boolean</CODE>