[GitHub] csantanapr commented on a change in pull request #3202: Support action continuations in the controller

[GitBox <gi...@apache.org>]

csantanapr commented on a change in pull request #3202: Support action continuations in the controller
URL: https://github.com/apache/incubator-openwhisk/pull/3202#discussion_r163044196
 
 

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 File path: docs/compositions.md
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 @@ -0,0 +1,144 @@
+# Action compositions
+
+Action compositions make it possible to dynamically build and invoke a series of actions. Action compositions are similar to sequences. However, whereas the components of a sequence must be specified before invoking the sequence, components of a composition can be decided as the composition is running.
+
+## Example
+
+Suppose we define an _increment_ action:
+
+```
+$ cat > increment.js
+function main({ value }) { return { value: value + 1 } }
+^D
 
 Review comment:
   What are this ^D about ? in the file

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