Row Text is there so you can associate written instructions with a row of a chart. For the most part, we envisioned this being used to keep track of shaping (for a sweater for example), special instructions you don’t want to forget (like changing needle size at a certain spot), or instructions for a special type of stitch that aren’t in your key.
We’ve heard the desire to be able to also associate the written row instructions with each line of a chart. It can be done today, but we realize that could be a lot of work. We are thinking on how to simplify this in the future. Unfortunately, there isn’t a “standard” for this association.