initial commit, from drupal7base

sites/all/modules/contrib/dev/ctools/help/context-relationships.html

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+<p>Relationship plugin data:</p>
+
+<pre>
+    'title' => The title to display.
+    'description' => Description to display.
+    'keyword' => Default keyword for the context created by this relationship.
+    'required context' => One or more ctools_context_required/optional objects 
+      describing the context input.
+      new panels_required_context(t('Node'), 'node'),
+    'context' => The callback to create the context. Params: ($context = NULL, $conf)
+    'settings form' => Settings form. Params: $conf
+    'settings form validate' => Validate. 
+</pre>