In Adlib Tracker 2, play and stop are mapped to F keys and I think enter pauses. In AT2 if you press space bar while song is stopped you advance one row while playing all the instrument/notes for the row you proceeded. This is a great way to “perform” and plot detailed time changes.
My suggestion: A tool that lets you jitter your way through the song/pattern by tapping the space bar (or other key) and Renoise calculates the time you are going at for each step and opens a dedicated row for F0/F1/F2 effects.
Its pretty useful. I got the idea by loading an old AT2 song and just tapping my way through a pattern and realizing that I could make it sound pretty amazing just by manually playing through the song so I went and tried to duplicate the groove with FXX effect and realized it could take an hour just to reasonably edit one pattern that way.