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-rw-r--r--metapost/context/base/mp-chem.mpiv2
1 files changed, 2 insertions, 0 deletions
diff --git a/metapost/context/base/mp-chem.mpiv b/metapost/context/base/mp-chem.mpiv
index 7ca40bbea..b861d3f12 100644
--- a/metapost/context/base/mp-chem.mpiv
+++ b/metapost/context/base/mp-chem.mpiv
@@ -132,6 +132,8 @@ vardef chem_init_some (suffix $) (expr e) =
fi
if not chem_star[$] :
scaled (.5/(sind .5chem_num1))
+ % carbon-carbon benzene bond length
+ scaled (1.4/1.54)
fi ;
fi ;