trimming empty <...>

Cause:

A tag is empty or just containing spaces. Space are ignored, due that introduction spaces are trimmed in HTML.  This tag is probably really empty or it can be due to a previous error. Tidy is trying to correct the tags of the page.

This can also be a side effect of a tag being implicitely closed by another one just following.

Solution:

Remove the tag.

BAD     <font size=2></font>
BAD     <font size=2> </font>
BAD     <font size=2>
        </font>

Here is a sample of a <p> tag implicitely closed by a block tag <table>. And then <p> is empty. See the defintion of <p> for more info

BAD     <p><table>...

References:

None