Insert text at the beginning of the row(s).
rs_insert_at_row_start(rows, text = NULL, id = rs_get_context()$id)(integer)
The index(es) of the row(s) in the document.
(character)
The text to insert. This should either be length one (in which case,
this text is applied to each specified row); otherwise, it should be
the same length as the rows vector.
The document id. When NULL or blank, the requested operation
will apply to the currently open, or last focused, RStudio document.