Helper/TextGrid was intended to assist with some samples. However, it has emerged recently on two tickets. PR #4342 intended to introduce functionality very similar to TextGrid, and was closed for that reason. Issue #1640 was closed as stale over 4 years ago, despite the fact that TextGrid seems an adequate resolution for it.
Since it seems that there is a use for this function beyond its original intended usage, I added a few parameters to give it some flexibility - the ability to omit row and/or column headers, and the ability to add a divider line between rows.
A description of this function is added to the formal documentation.
oleibman