The sloping typeface (7)
I believe the answer is:
italics
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">the sloping typeface</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for italics that I've seen before include "Sloping text" , "List CIA with letters that slant" , "Sloping typefaces" , "indication of stress?" , "Slanting print" .)