The macro \\ should not be used when an empty line follows.
---
doc/refsheet.tex | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/doc/refsheet.tex b/doc/refsheet.tex
index d0c31f7..106d8b5 100644
--- a/doc/refsheet.tex
+++ b/doc/refsheet.tex
@@ -6,11 +6,10 @@
{\Huge libzahl}
-\\
+\vspace{1em plus .2em minus .1em}
Unless specified otherwise, all times are of type {\tt z\_t}.
-\\ \\
-
+\vspace{2em plus .4em minus .2em}
\begin{tabular}{lll}
\textbf{Initialisation} & {} & {}
\\
--
2.7.3
