I am new to latex. So new that I never heard of this a month before.

I am using wissdoc.cls, macros.tex, titelseite.tex and diplarb.tex from the following template.

I have an error as follows:

l.135 \OnehalfSpacing
            % 1,5 Zeilenabstand}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

I heard somewhere that changing the spelling from onehalfspacing to OneHalfSpacing would make the error go away. Please help me fix this.

I am willing to add more data if required.

3 Answers 3


The package setspace lets you easily change the line spacing, and that provides a macro \onehalfspacing. Hence, add


For those of you using the memoir document class, the fix involves disemulating the setspace package first, as outlined here:

% \onehalfspacing, etc.
  • Note that memoir include similar features as setspace and actually implements some of it better
    – daleif
    May 20, 2016 at 13:56
  • 2
    @daleif This may be the case, but I suspect a lot of people like myself are tired of CTRL+F:ing the tome that is the Memoir manual.
    – Doggie52
    May 22, 2016 at 19:34

I had similar problem and whatever I did to fix the issue it didn't work. The reason was that the packages had conflict with "setspace". On the other hand, without using the "setspace" package, the \onehalfspacing macro didn't work properly (although it didn't complain, but the spacing was not as it was supposed to be).

I ended up using another solution which worked perfectly:


This makes the spacing 1.5 times the normal spacing. If you want normal or double spacing, you can use values 1 and 1.6 respectively.

PS: For tables, figures and footnotes, you can add a smaller spacing in their block (e.g., between begin{table} and end{table} statements). This does not affect the spacing outside those blocks.

Also if you want, you can change the spacing from place to place:

%one and half spacing


% double spacing

but note that from the place you choose the last specified spacing to the end of the document, that spacing will be in effect.

If you want a specific spacing in the whole document, put your desired one right after begin{document}.

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