diff --git a/.gitignore b/.gitignore
index da746ae..8b4cadf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,5 @@
*.psd
*.ai
*.tiff
-*.png
*.jpg
*.pdf
diff --git a/README.md b/README.md
index 4512baa..a9cbc06 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,19 @@ With the open source graph visualization software [GraphViz](http://www.graphviz
`dot ppc-circuits.dot -Tsvg -o ppc-circuits.svg`
-
-Sample content: Graphs of posterior parietal cortex and basal ganglia connectivity.
+
+Sample content.
+html alone:
+
+
+
+full link:
+
+
+
+md link:
+
+
+
diff --git a/fig_motor-neuron-key.png b/fig_motor-neuron-key.png
new file mode 100644
index 0000000..ab5f01b
Binary files /dev/null and b/fig_motor-neuron-key.png differ
diff --git a/fig_motor-neuron-key.svg b/fig_motor-neuron-key.svg
new file mode 100644
index 0000000..85cb3b6
--- /dev/null
+++ b/fig_motor-neuron-key.svg
@@ -0,0 +1,394 @@
+
+