If I understand it correctly (from maual and other posts in the forum) the “Init” switch in an expression map is triggered every time playback resumed after any stop at any position in the score.
I would have liked to use the Init switch only at the beginning of a flow to clean up any controllers/triggers I might have set during the score (like Stretch Factor, Timbre Adjust or other all VSL parameters) and so on.
So this would not serve this purpose as “Init” is applied in the middle of a playback section. Initializing the instrument so to speak.
You could create a playing technique named FlowInit which is associated with a playback technique with the same name. This playing technique could be applied to an instrument at the beginning of a flow and a switch associated with the FlowInit playback technique could be added to the expression map for that instrument which would perform whatever flow initialization is desired.
For instance I like to use Midi Trigger Regions for switching my string sections between “Unison” and “Divisi” (In VSL Synchron Player).
e.g.
C-1 triggers Violins 14
C#-1 triggers Violins 6
Instead of going through the process of defining Playing Techniques and Expression Maps I find Midi Trigger Regions very useful.
I use Midi Trigger Regions also to switch on/off playing styles like “Soft Attack”, “Soft Release”, “agile” etc.
At the beginning of the score I want all of these modifications to be reset to a clearly defined state.
During Playback though the current Settings need to be preserved and not be initialized.
Of course all this might be handled differently (adding a Midi Trigger Region at the beginning of the flow) or by defining proper Playing Techniques, but I guess “Init” might have been useful here.