`type t`````
`include sig ... end`
`val t_of_sexp : Base.Sexp.t ‑> t`
`val sexp_of_t : t ‑> Base.Sexp.t`
`val compare : t ‑> t ‑> int`
`val move_focus_row : Table_intf.Focus_dir.t ‑> t`

Moves the current focus in a given direction. If there is no focus it focuses the top or bottom row on moving down and up respectively.

`val move_focus_col : Table_intf.Focus_dir.t ‑> t`
`val set_focus_row : Row_id.t option ‑> t`
`val set_focus_col : Column_id.t option ‑> t`
`val page_focus_row : Table_intf.Focus_dir.t ‑> t`