For instance pre o + v should be interpreted as (pre o) + v in counting.node.
For instance `pre o + v` should be interpreted as `(pre o) + v` in [`counting.node`](https://gitea.lemnoslife.com/Benjamin_Loison/Synchronous_reactive_systems/src/commit/5cabb042fc954a8fabf865e9aa2b49f43e3b2dc9/tests/counting.node).
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For instance
pre o + vshould be interpreted as(pre o) + vincounting.node.