Suggested ergonomic improvement: I tick two boxes and press the letter “l” on the keyboard l for lettering and then a bit of javascript acts as if I were going to the very top of the page to select manual lettering in the mass actions then click on the button.

The result is that I can letter my accounts efficiently again!

Are you interested? Before I go and make a PR on the heart of Dolibarr to propose this contribution, I'd like your feedback and opinions.

<script language="javascript">
/*
 * call manual lettering on keypress 'l', then you can have one hand on
 * your mouse and the other one on keyboard to make lettering as fast or
 * as efficient as you can ...
 */
$( document ).ready(function() {
    $('body').on('keydown',''function(event) {
        var verif = $(event.target).hasClass('checkforselect');
        if (verif && event.keyCode == 76) {
            $('#massaction').val('letteringmanual');
            $('form').append('<input type="hidden" name="confirmmassaction" value="1" />').submit();
        }
    });
});
</script>