Filters a sanitized HTML class string.

Filters a sanitized key string.

Filters a mime type following sanitization.

Filters an option value following sanitization.

Filters a sanitized text field string.

Filters a sanitized textarea field string.

Filters a sanitized title string.

Filters a list of trackback URLs following sanitization.

Filters a sanitized username string.

Filters the Smiley image URL before it’s used in the image element.