What are projectable nodes in angular2
<p>On reading the documentation of <a href="https://angular.io/docs/ts/latest/api/core/index/ViewContainerRef-class.html#!#createEmbeddedView-anchor" rel="noreferrer">ViewContainerRef</a> and <a href="https://angular.io/docs/ts/latest/api/core/index/ComponentFactory-class.html#!#create-anchor" rel="noreferrer">ComponentFactory</a>, where , for example we have the method </p>

<p><a href="https://angular.io/docs/ts/latest/api/core/index/ViewContainerRef-class.html#!#createEmbeddedView-anchor" rel="noreferrer">ViewContainerRef#createComponent</a> which takes 3 arguments : <code>componentFactory</code> , <code>injector</code> and <code>projectableNodes</code>. </p>

<p>I have tried looking up what <code>projectableNodes</code> mean and how they are used in blogs, tutorials and source code but could not find much. </p>

<p>On looking up the <a href="https://github.com/angular/angular/pull/11235/files#r77220989" rel="noreferrer">diff for for ngComponentOutlet directive</a>, All I could gather was that the string in projectableNodes is "projected" or rendered on to the created components view ( like ng-content may be). If so that is confusing as  we have <a href="https://angular.io/docs/ts/latest/api/core/index/ViewContainerRef-class.html#!#createEmbeddedView-anchor" rel="noreferrer">ViewContainerRef#createEmbeddedView</a> for the same. </p>

<p>I would like to know as to what are these <code>projectedNodes</code> and have an example of their usage.</p>