diff --git a/cesium-integration.md b/cesium-integration.md
index 12f440e..a9bd68f 100644
--- a/cesium-integration.md
+++ b/cesium-integration.md
@@ -48,4 +48,7 @@ This integration is developed in an open source layer built ontop of ol3js as ol
  * Compute from scratch a new state from the new context?
 * Save computing resources
  * disable rendering of the underlying map or globe if it's hidden by the overlayed one
- * still preseve context synchronization
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+ * still preseve context synchronization
+* Smooth transition needs to know the elevation of the destination point of the camera
+ * cesium provides an asynchronous method
+ * cesium provides in a dev branch a specific method
\ No newline at end of file