An optional view column in which the editor should be shown.
The default is the active, other values are adjusted to
be Min(column, columnCount + 1), the active-column is
not adjusted. Use ViewColumn.Beside to open the
editor to the side of the currently active one.
An optional flag that when true will stop the editor from taking focus.
An optional flag that controls if an editor-tab will be replaced
with the next editor or if it will be kept.