...
sub ClassInit {
    my ($class,$mw) = @_;
    $mw->bind($class,'<Configure>',['_yscrollCallback']);
    $mw->bind($class,'<Down>',['_upDown',1]);
    $mw->bind($class,'<Up>',  ['_upDown',-1]);
    $mw->bind($class,'<Shift-Up>',  ['_extendUpDown',-1]);
    $mw->bind($class,'<Shift-Down>',['_extendUpDown',1]);
    $mw->bind($class,'<Control-Home>','_cntrlHome');
    $mw->bind($class,'<Control-End>','_cntrlEnd');
    $mw->bind($class,'<Shift-Control-Home>',['_dataExtend',0]);
    $mw->bind($class,'<Shift-Control-End>',['_dataExtend',Ev('index', 'end')]);
    $mw->bind($class,'<Control-slash>','_selectAll');
    $mw->bind($class,'<Control-backslash>','_deselectAll');
}
....