Basically, this feature is not very complete. You can test it by following steps:

1. Enable option,
   $opt[“pastefromexcel”] = true;
   $g->set_options($opt);
2. Copy a row from excel (one row at a time)
3. On grid, double click to go in edit row mode, and press Ctrl+V

Hello.  This feature might come in very handy for a new project.

Is this feature working without any problems?