code: public void setDimensions(float llx, float lly, float urx, float ury) {
  		this.llx = llx;
  		this.lly = lly;
  		this.urx = urx;
  		this.ury = ury;
  	}
docs: Sets the dimensions of this annotation.
  
  @param llx
  the lower left x-value
  @param lly
  the lower left y-value
  @param urx
  the upper right x-value
  @param ury
  the upper right y-value