When I define a constant and then use it to reference an input dataset it makes it very easy for me to switch paths. It also creates a little headache for me if I copy that input or create another workflow. When I create another workflow, I must re-type and create more user constant entries. It would be nice to be able to + (create new workflow) and to generate it via a copy of the current open workflow (copy ALL preferences set plus the user constants) from the workflow. Even the ability to copy/paste the constants would be an improvement.