title: What type of project to create for the shared/core code?
body: <p>I'm just starting out using Xamarin so apologies if this is a very very basic question. I searched around but I couldn't find the information I need.</p>
  
  <p>I've created a blank solution and I've added an Android and an iPhone project to this solution. Both apps/projects build and run okay. Now I want to add a third project which will hold the common code for the two apps. </p>
  
  <p>When I right-click my solution and open up the 'Add new project' window, what project type should I choose for this shared/core code project?</p>