How-to stuff (4)
I believe the answer is:
abcs
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">how-to stuff</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for abcs that I've seen before include "12 [THINGS EASY]" , "Know these to be well versed - alphabetically?" , "guides ..." , "Know these letters to be well informed" .)