Simon Willison has written a nice article about Simple tricks for more usable forms and from it I learned about how
<label> tags work. They have been part of HTML since 1998 so today most browsers should support them; and if not, it's not a show-stopper. What they do is that they help to associate a text with an input field. For example, here, mouseclick the word "Name" and "Agree?" below.
Nothing happens! Instead, with
<label> tags, notice the difference when you mouseclick the words "Name" and "Agree?"
For code for the latter example is:
<form> <label for="name2"><b>Name</b></label> <input name="var21" id="name2"><br> <label for="agree2">Agree?</label> <input type="checkbox" name="var22" id="agree2"> </form>