title: TObjectList appear in two units
body: <p>I am using Delphi XE3. When searching helps for TObjectList, I find it appears in two units:</p>
  
  <p><a href="http://docwiki.embarcadero.com/Libraries/Tokyo/en/System.Contnrs.TObjectList" rel="nofollow noreferrer">http://docwiki.embarcadero.com/Libraries/Tokyo/en/System.Contnrs.TObjectList</a></p>
  
  <p>and</p>
  
  <p><a href="http://docwiki.embarcadero.com/Libraries/Tokyo/en/System.Generics.Collections.TObjectList" rel="nofollow noreferrer">http://docwiki.embarcadero.com/Libraries/Tokyo/en/System.Generics.Collections.TObjectList</a></p>
  
  <p>In such a case, which unit should I include to use the class? Also what is the different between TObjectList and TList, I just see TObjectList = class(TList) in the first document so TObjectList is identical to TList?</p>
  
  <p>Thanks</p>