diff --git a/doc/vcsc.odg b/doc/vcsc.odg
new file mode 100644
index 0000000000..07b60154bd
Binary files /dev/null and b/doc/vcsc.odg differ
diff --git a/doc/vcsc.png b/doc/vcsc.png
new file mode 100644
index 0000000000..ef3c9cf928
Binary files /dev/null and b/doc/vcsc.png differ