sub replace1{

my $chosen1=$opt1;

$t->insert('sel.first',"$chosen1");              
$t->delete('sel.first','sel.last');              
$t->tagConfigure("replaced",-foreground=>"black");

my $r1=$t->search(-forwards,"$chosen1",'end');
$t->tagAdd("replaced","$r1","$r1 wordend");

#print"\nThe start pos of the pattern:";
#print "\n$result";      

}