Append a cell at the given location. A default x or y is read from the table<-current
attribute. Please note that
table_cell<-convert
wraps graphical
objects into a table cell, so graphicals can be appended directly to the
table.
After the table->append, table<-current
is incremented to the next column on this row. If there is no next
column, it will be created using table<-column.
Use table->next_row
to force the insertion point to the first column on the next row.
If the next column on this row points into a row-spanned
cell, the insertion point will be incremented to point to the first free
column after this row-spanned cell.
