Stack <TagNode> stk = new Stack <TagNode>();
		TagNode temp;
		if(!sc.hasNext()){
			return;
		}
		while (sc.hasNext()){
			String next = sc.nextLine();
			int length = next.length();

			if(!next.contains("<")) {		// for words in sentences and such
				temp=new TagNode (next, null, null);
				if(stk.peek().firstChild!=null) {
					stk.peek().sibling=temp;
				}else {
					stk.peek().firstChild=temp;
				}
			}

			else if(next.contains("/")) {
				temp = stk.pop();
				if(!stk.isEmpty()) {
					if(stk.peek().firstChild!=null) {
						stk.peek().sibling=temp;
					}else {
						stk.peek().firstChild=temp;
					}
				}else {root=temp;}
			}

			else if(next.contains("<")) {		//opening tag
				stk.push(new TagNode (next.substring(1, length-1), null, null));
			}
		}