As far as (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">as far as</span>' is the definition.<br/ ><span class="explanation-format__explanation">('up to' and 'as far as' can both mean 'until')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for up to that I've seen before include "Engaged in doing" , "Plotting" , "Incumbent upon" , "Capable of" , "As many as, though no more" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">as far as</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for upto that I've seen before include "To the time that" , "'Having the requisite qualities for (2,2)'" , "Motorcade escort" , "Capable of or engaged in" , "Engaged in - no good?" .)