Just a quick ‘in between’ note. I had to make a small change to the flow editor because a flow can now have an attribute ‘FlowIsFloating’ assigned (through a link pointing to ‘True’ or ‘False’). It is used by the scanner and parser routines to find flows that can appear anywhere in a stream.  This provides a generalized manner of defining this property without having to create custom routines for each set of flows. Spaces between words are good examples where this is used. The context menu for the flow name in the overview list on the editor contains a toggable menu item to activate/deactivate this attribute.  A green line in front of the flow indicates it is floating.  Here’s a screenshot: