+-----------------------------------------------------------
+
+Abstract for longer posts
+-------------------------
+
+If you want to spread your post to several third party networks you can have the problem that these networks have (for example) a length limitation.
+(Like on Twitter)
+
+Friendica is using a semi intelligent mechanism to generate a fitting abstract.
+But it can be interesting to define an own abstract that will only be displayed on the external network.
+This is done with the [abstract]-element.
+Example:
+
+<pre>[abstract]Totally interesting! A must-see! Please click the link![/abstract]
+I want to tell you a really boring story that you really never wanted
+to hear.</pre>
+
+Twitter would display the text "Totally interesting! A must-see! Please click the link!".
+On Friendica you would only see the text after "I want to tell you a really ..."
+
+It is even possible to define abstracts for separate networks:
+
+<pre>
+[abstract]Hi friends Here are my newest pictures![abstract]
+[abstract=twit]Hi my dear Twitter followers. Do you want to see my new
+pictures?[abstract]
+[abstract=apdn]Helly my dear followers on ADN. I made sone new pictures
+that I wanted to share with you.[abstract]
+Today I was in the woods and took some real cool pictures ...
+</pre>
+
+For Twitter and App.net the system will use the defined abstracts.
+For other networks (e.g. when you are using the "statusnet" connector that is used to post to GNU Social) the general abstract element will be used.
+
+If you use (for example) the "buffer" connector to post to Facebook or Google+ you can use this element to define an abstract for a longer blogpost that you don't want to post completely to these networks.
+
+Networks like Facebook or Google+ aren't length limited.
+For this reason the [abstract] element isn't used.
+Instead you have to name the explicit network:
+
+<pre>
+[abstract]These days I had a strange encounter ...[abstract]
+[abstract=goog]Helly my dear Google+ followers. You have to read my
+newest blog post![abstract]
+[abstract=face]Hello my Facebook friends. These days happened something
+really cool.[abstract]
+While taking pictures in the woods I had a really strange encounter ... </pre>
+
+The [abstract] element isn't working with the native OStatus connection or with connectors where we post the HTML.
+(Like Tumblr, Wordpress or Pump.io)