message: more detail for flow container in sprint 2
diff: @@ -11,8 +11,13 @@ The sprint will run from June to August.
  ### Rich text
  -The previous sprint ended with a distributed string. In sprint 2 we will extend it to include rich text formatting. As
  -well as tackle some of the tricky collaborative edge cases as defined by our partner teams in Office.
  +The previous sprint ended with a distributed string. In sprint 2 we will extend it to include rich text formatting. We will also tackle some of the tricky collaborative edge cases as defined by our partner teams in Office.
  +
  +During this sprint, we will investigate block attributes as used in applications such as quotations and lists. We will implement flat attributes, such as emphasis. We will also implement embedding of interactive components, such as Ivy charts. Finally, we will implement the first version of the grid control, which will support tables, spreadsheet ranges, and multi-column layout.
  +
  +### Flow Container View Model
  +
  +In this sprint, we will investigate paragraph formatting in the flow container. We will implement a line-oriented formatting model for flows, replacing the current paragraph model. We will start by adapting for incremental application the best fit line breaking model as described in [Knuth and Plass line breaking algorithm](http://www3.interscience.wiley.com/journal/113445055/abstract). We will then investigate how to adapt for incremental application the Knuth Plass optimum fit line breaking algorithm. We will investigate also how to extend the algorithm to handle floating figures (which bring in as a variable the lengths of some lines).
  ### Service scalability and robustness
  