I have read this but it doesn't help me.

I know nothing about TEX, all I care is to extract Doxygen documentation from a C project in a PDF.

For that, the DoxyWizard wants me to generate TEX files ready for hyperlinked PDFs, then I use the pdflatex tool (I actually run an autogenerated make.bat to do that) and it generates me a PDF.

Problem is that while running the pdflatex tool some "LaTeX Error: Undefined tab position" messages appear which determine a lot of linking errors in the resulting PDF.

Where should I be looking for the cause of these errors?

  • Welcome to TeX.SX! You can have a look at our starter guide to familiarize yourself further with our format.
    – user11232
    Dec 10, 2014 at 15:10
  • Please add a minimal working example (MWE)
    – user11232
    Dec 10, 2014 at 15:11
  • You presumably have a tabbing environment and commands such as \> to move to the next tab position without defining that position. But without an example, hard to say. Dec 10, 2014 at 16:07
  • I wouldn't know what to show you really... I'm running Doxygen GUI frontend and it generates a folder filled mostly with .TEX files and a make.bat along a makefile. I just run the bat file and the console stops at times giving me errors. The generated PDF is incomplete. Dec 10, 2014 at 16:54

1 Answer 1


The error means that you are using tabbing and have moved to a tab beyond the last defined tab on the line.

! LaTeX Error: Undefined tab position.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.

l.7   x\> y \>

The above error shows (via the position of the line break) that the second tab \> is not defined. The reason being that there is only one \= setting tab stops in the first line of this test file:



  aaaaa\= bbbb\\
  x\> y \> z

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