When point is placed on a vtable, the following keys are bound:
Sort the table by the current column
(vtable-sort-by-current-column). Note that the table is sorted
according to the data returned by the getter function (see Making A Table), not by how it’s displayed in the buffer. Columns that have
only numerical data are sorted as numbers, the rest are sorted as
strings.
Make the current column narrower
(vtable-narrow-current-column).
Make the current column wider
(vtable-widen-current-column).
Move to the previous column (vtable-previous-column).
Move to the next column (vtable-next-column).
Regenerate the table (vtable-revert-command). This command
mostly makes sense if the table has a :objects-function that
can fetch new data.