diff --git a/README.md b/README.md
index f863b4c..31bac44 100644
--- a/README.md
+++ b/README.md
@@ -9,5 +9,6 @@ The usage instructions are provided in the comments.
 A complete test suite is provided in `test.cpp`; it includes an exhaustive randomized test.
 
 For development-related instructions please refer to the CI configuration file.
+To release a new version, simply create a new tag.
 
 ![Tree](randomized_test_tree.png "Random tree generated by the test suite")
diff --git a/cavl.h b/cavl.h
index c439d0b..fced134 100644
--- a/cavl.h
+++ b/cavl.h
@@ -1,7 +1,7 @@
 /// Source: https://github.com/pavel-kirienko/cavl
 ///
 /// Cavl is a single-header C library providing an implementation of AVL tree suitable for deeply embedded systems.
-/// To integrate it into your project, simply copy this file into your source tree.
+/// To integrate it into your project, simply copy this file into your source tree. Read the API docs below.
 ///
 /// See also O1Heap <https://github.com/pavel-kirienko/o1heap> -- a deterministic memory manager for hard-real-time
 /// high-integrity embedded systems.
@@ -39,7 +39,7 @@ extern "C" {
 
 /// The tree node/root. The user data is to be added through composition/inheritance.
 /// The memory layout of this type is compatible with void*[4], which is useful if this type cannot be exposed in API.
-/// Per standard convention, nodes that compare smaLLer are put on the Left; those that are laRgeR are on the Right.
+/// Per standard convention, nodes that compare smaller are put on the left.
 typedef struct Cavl Cavl;
 struct Cavl
 {
diff --git a/randomized_test_tree.png b/randomized_test_tree.png
index 1f945fe..71165c8 100644
Binary files a/randomized_test_tree.png and b/randomized_test_tree.png differ
diff --git a/test.cpp b/test.cpp
index f985611..2c5c29a 100644
--- a/test.cpp
+++ b/test.cpp
@@ -150,21 +150,23 @@ void printGraphviz(const Node<T>* const nd)
     std::puts("digraph {");
     std::puts(
         "node [style=filled,shape=circle,fontcolor=white,penwidth=0,fontname=\"monospace\",fixedsize=1,fontsize=18];");
-    std::puts("nodesep=0.1;ranksep=0.3;");
+    std::puts("edge [arrowhead=none,penwidth=2];");
+    std::puts("nodesep=0.0;ranksep=0.3;splines=false;");
     traverse<true>(nd, [](const Node<T>* const x) {
         const char* const fill_color = (x->bf == 0) ? "black" : ((x->bf > 0) ? "orange" : "blue");
-        std::printf("\"%u\"[fillcolor=%s];", unsigned(x->value), fill_color);
+        std::printf("%u[fillcolor=%s];", unsigned(x->value), fill_color);
     });
+    std::puts("");
     traverse<true>(nd, [](const Node<T>* const x) {
         if (x->lr[0] != nullptr)
         {
-            std::printf("\"%u\":w->\"%u\":n;",
+            std::printf("%u:sw->%u:n;",
                         unsigned(x->value),
                         unsigned(reinterpret_cast<Node<T>*>(x->lr[0])->value));
         }
         if (x->lr[1] != nullptr)
         {
-            std::printf("\"%u\":e->\"%u\":n;",
+            std::printf("%u:se->%u:n;",
                         unsigned(x->value),
                         unsigned(reinterpret_cast<Node<T>*>(x->lr[1])->value));
         }