Hides grid lines (dotted lines in place of hidden borders) for tables imported from RTF.
property AutoHideTableGridLines: Boolean;
(introduced in version 1.6)
If this property is set to True, RichView includes rvtoHideGridLines in Options of tables read from RTF.
Note: it's not necessary to set this option for individual tables. You can hide and show grid for all tables using rvoShowGridLines option in TRichView.Options.