with a standard html select box, you can select multiple options if the “multiple” attribute is set, but you’ve got to hold down the appropriate modifier key (ctrl on windows) in order to do so.
standard html select box
as an aside: it would be interesting to study how many people grasp the modifier-key concept and how usable the modifier key is in terms of time to complete a task and number of errors.
- multiple selection using checkboxes is just so neat. but it could be improved.