From: Costa Shulyupin <constantine.shulyupin@gmail.com>
Date: Thu, 6 Oct 2022 18:48:12 +0000 (+0300)
Subject: doxygen for dotgen
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=0679174b5fa24a16d45c4a1ed418281b6dfc3f15;p=graphviz

doxygen for dotgen
---

diff --git a/lib/dotgen/dotinit.c b/lib/dotgen/dotinit.c
index a938f429a..ebb8e188d 100644
--- a/lib/dotgen/dotinit.c
+++ b/lib/dotgen/dotinit.c
@@ -499,3 +499,14 @@ Agraph_t * dot_root (void* p)
     return GD_dotroot(agroot(p));
 }
 
+/**
+ * @defgroup engines Graphviz layout engines
+ * @{
+ * @dir lib/dotgen
+ * @brief [hierarchical or layered](https://en.wikipedia.org/wiki/Layered_graph_drawing) layout engine, API dotgen/dotprocs.h
+ *
+ * [Dot layout user manual](https://graphviz.org/docs/layouts/dot/)
+ *
+ * Other @ref engines
+ * @}
+ */