In the memoir class, how can I modify the format for the ell chapter style. In the manual, the code is not listed (unlike the other styles).


Basically in the above, all I want to do is make the horizontal and vertical line a little thicker and of a different colour.

I have been through the source code of the memoir package, but cannot find where the code is for this particular chapter style.

  • In memoir.cls (version: 2016/05/16 v3.7f), I have \makechapterstyle{ell}{% at line 3321.
    – jon
    Mar 8, 2017 at 22:32
  • Well I just downloaded the source from ctan.org/tex-archive/macros/latex/contrib/memoir, and it doensn't contain a memoir.cls file. What am I missing? Mar 9, 2017 at 2:39
  • Do you have memoir.ins? Run latex memoir.ins. But why are you downloading from CTAN? What version of memoir are you currently using?
    – jon
    Mar 9, 2017 at 2:47
  • I figured it out. Just looked for the local version installed by mactex, I thought downloading would be more convenient, as I just wanted to find the macro to redefine, anyway all good. Mar 9, 2017 at 4:57
  • So would you be so kind and post it as an answer and accept it? Otherwise it appears under the unanswered questions
    – jjdb
    May 5, 2017 at 10:23

1 Answer 1


This is how I ended up modifying it, the \chs@ell@helper command needed redefining:

%Modify the fancy chapter lines.
            \leavevmode\chapnumfont #1\vphantom{1}%
            \midrule %\hline%

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