The *Column Viewer* option is quite useful, especially the feature of *Data
Table View* of the information presented when asking for *Show Summary*, as
it presents all column names (in the data table) in a table column,
allowing printing, sorting&printing, etc.
However, *that Summary table could be more useful it it would be connected
to the data table*, in a way that changes in titles in the *Columns* column
would change titles in the data table. For example, if many columns in the
data table contain the word "Mean" (e.g. because they were generated by
*Summary*), I can remove at once all these "Mean"s (if I want to shorten
the titles) by using "Find" and replacing all of them with a blank.