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-rw-r--r--doc/documentation.tex5
1 files changed, 5 insertions, 0 deletions
diff --git a/doc/documentation.tex b/doc/documentation.tex
index 15b94e5..6a5c5d1 100644
--- a/doc/documentation.tex
+++ b/doc/documentation.tex
@@ -1407,6 +1407,11 @@ snprintf(buffer, length,
CCTK_MyProc(NULL))
\end{verbatim}
+Each file begins with a header comment describing the file format in
+detail. After the header comment, there is one line in the file for
+each call on \verb|CCTK_InterpLocalUniform()| which is handled by this thorn
+(with \verb|log_interp_coords| set to \verb|true|).
+
Note that these log files are typically quite large, and writing them
may significantly slow the simulation -- you should probably only use
this option for debugging purposes.