I really like the idea of making the main input a saveable textarea that can hold multiple words rather than just one. Reminds me of Numi and Soulver, which do

I really like the idea of making the main input a saveable textarea that can hold multiple words rather than just one. Reminds me of Numi and Soulver, which do this for calculators (I never went back to a traditional calculator app after discovering them). I wonder if there's other apps that could be made more powerful by replacing the single-input with a textarea.