code: package com.hrLDA.doc;
  
  import java.util.HashMap;
  
  public class PPTSDocument extends FTXDocument{
  
  	private HashMap <String, String> slidesRelationhashMap = new HashMap <String, String> ();
  	
  	public void setSlidesRelationhashMap(
  			HashMap<String, String> slidesRelationhashMap) {
  		this.slidesRelationhashMap = slidesRelationhashMap;
  	}
  
  	public HashMap<String, String> getSlidesRelationhashMap() {
  		return this.slidesRelationhashMap;
  	}
  
  	public void addToSlidesRelationhashMap(String currentText, String parentText) {
  		this.slidesRelationhashMap.put(currentText, parentText);
  	}
  	public PPTSDocument() {
  		this.slidesRelationhashMap = null;
  	}
  
  }
  