1 files changed, 31 insertions, 0 deletions
diff --git a/viz/src/lib.rs b/viz/src/lib.rs
new file mode 100644
index 0000000..b40c78a
--- /dev/null
+++ b/viz/src/lib.rs
@@ -0,0 +1,31 @@
+//! This library defines a binary format to store graph data such that
+//! a client which understands the format can easily print the graph,
+//! centered at any specific node, with any scope.  The library also
+//! provides functions to print graphs in this format.
+//!
+//! This way, one does not need a server to print and interact with
+//! graphs.
+//!
+//! # Graph representation
+//!
+//! The library uses the [`Graph`][graph::Graph] trait from the crate
+//! [graph].  Only the functions exposed from the trait are used by
+//! this library.  So the users can also implement the trait and then
+//! print the graph data represented by other graph crates.
+
+extern crate graph;
+
+pub fn add(left: usize, right: usize) -> usize {
+    left + right
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}