I like CWL, and would like to use it in a production setting. I am coming from a Make approach, whereby output is not remade unless datestamps of input determine this to be necessary. I cannot find any documentation on this aspect for CWL. I have read the 'Gentle Intro' twice end-to-end thinking this was an oversight of mine. Can someone direct me to docs if extant, or give insight if not? Googling doesn't come up with anything either. I would like to avoid going all-in on Make, it's not particularly user-friendly.