title: What is an Android Support Library?
body: <p>What is the purpose of an Android Support Library?</p>
  
  <p>Does this mean <code>http://developer.android.com/tools/extras/support-library.html</code>?</p>
  
  <p>Currently my app minSdkVersion is restricted to level 10.</p>
  
  <p>I am trying to use <code>ViewPager</code>, which is not available for a higher API (for example for level 16)...</p>
  
  <p>What does this support library mean? Does it mean I can use <code>ViewPager</code>, and the user of the phone with API level less than 16 can still see <code>ViewPager</code> widget?</p>