Location helper functions can be used to target cells with virtually any
function that has a locations argument. Here is a listing of all of the
location helper functions, with locations corresponding roughly from top to
bottom of a table:
cells_title(): targets the table title or the table subtitle depending on
the value given to the groups argument ("title" or "subtitle").
cells_stubhead(): targets the stubhead location, a cell of which is only
available when there is a stub; a label in that location can be created by
using the tab_stubhead() function.
cells_column_spanners(): targets the spanner column labels with the
spanners argument; spanner column labels appear above the column labels.
cells_column_labels(): targets the column labels with its columns
argument.
cells_row_groups(): targets the row group labels in any available row
groups using the groups argument.
cells_stub(): targets row labels in the table stub using the rows
argument.
cells_body(): targets data cells in the table body using intersections of
columns and rows.
cells_summary(): targets summary cells in the table body using the
groups argument and intersections of columns and rows.
cells_grand_summary(): targets cells of the table's grand summary using
intersections of columns and rows
cells_stub_summary(): targets summary row labels in the table stub using
the groups and rows arguments.
cells_stub_grand_summary(): targets grand summary row labels in the table
stub using the rows argument.
cells_footnotes(): targets all footnotes in the table footer (cannot be
used with tab_footnote()).
cells_source_notes(): targets all source notes in the table footer
(cannot be used with tab_footnote()).
When using any of the location helper functions with an appropriate function
that has a locations argument (e.g., tab_style()), multiple locations
can be targeted by enclosing several cells_*() helper functions in a
list() (e.g., list(cells_body(), cells_grand_summary())).