Not to mention the confusion arising from checkboxes in web pages used in place of checkmarks. A checkmark alone should be the correct object to use for output

Not to mention the confusion arising from checkboxes in web pages used in place of checkmarks. A checkmark alone should be the correct object to use for output only, while a checkbox normally would accept an input from the user. I don't recall where, but have seen this some times around the web and found it misleading.