Save geometry with data Tree?

Hello everyone! I was wondering how one could be able to save a result from grasshopper without having to run the whole definition again, but keeping the data tree.

So for example, I have a huge mesh of a terrain, and I do a contour that takes 10mins to complete. How can I save this results and keep the data tree? Is internalizing the geometry the only way?


Data Dam can also hold the geometry.

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In Rhino 6 there are 2 components to do exactly this.

Data-Output <> Data-Input

can be found in Params>Util