Added javadocs and separated trivial implementations into distinct packages.
diff --git a/core/trivial/src/main/javadoc/org/onlab/onos/net/trivial/device/impl/package.html b/core/trivial/src/main/javadoc/org/onlab/onos/net/trivial/device/impl/package.html
new file mode 100644
index 0000000..2195da2
--- /dev/null
+++ b/core/trivial/src/main/javadoc/org/onlab/onos/net/trivial/device/impl/package.html
@@ -0,0 +1,3 @@
+<body>
+Core subsystem for tracking infrastructure devices.
+</body>
\ No newline at end of file
diff --git a/core/trivial/src/main/javadoc/org/onlab/onos/net/trivial/host/impl/package.html b/core/trivial/src/main/javadoc/org/onlab/onos/net/trivial/host/impl/package.html
new file mode 100644
index 0000000..79f7bb0
--- /dev/null
+++ b/core/trivial/src/main/javadoc/org/onlab/onos/net/trivial/host/impl/package.html
@@ -0,0 +1,3 @@
+<body>
+Core subsystem for tracking edn-station hosts.
+</body>
\ No newline at end of file
diff --git a/core/trivial/src/main/javadoc/org/onlab/onos/net/trivial/impl/package.html b/core/trivial/src/main/javadoc/org/onlab/onos/net/trivial/impl/package.html
deleted file mode 100644
index ba285bd..0000000
--- a/core/trivial/src/main/javadoc/org/onlab/onos/net/trivial/impl/package.html
+++ /dev/null
@@ -1,3 +0,0 @@
-<body>
-ONOS core implementations.
-</body>
\ No newline at end of file
diff --git a/core/trivial/src/main/javadoc/org/onlab/onos/net/trivial/link/impl/package.html b/core/trivial/src/main/javadoc/org/onlab/onos/net/trivial/link/impl/package.html
new file mode 100644
index 0000000..5bba317
--- /dev/null
+++ b/core/trivial/src/main/javadoc/org/onlab/onos/net/trivial/link/impl/package.html
@@ -0,0 +1,3 @@
+<body>
+Core subsystem for tracking infrastructure links.
+</body>
\ No newline at end of file
diff --git a/core/trivial/src/main/javadoc/org/onlab/onos/net/trivial/topology/impl/package.html b/core/trivial/src/main/javadoc/org/onlab/onos/net/trivial/topology/impl/package.html
new file mode 100644
index 0000000..b4cca07
--- /dev/null
+++ b/core/trivial/src/main/javadoc/org/onlab/onos/net/trivial/topology/impl/package.html
@@ -0,0 +1,3 @@
+<body>
+Core subsystem for tracking consistent topology graph views.
+</body>
\ No newline at end of file
diff --git a/core/trivial/src/main/javadoc/org/onlab/onos/net/trivial/topology/provider/impl/package.html b/core/trivial/src/main/javadoc/org/onlab/onos/net/trivial/topology/provider/impl/package.html
new file mode 100644
index 0000000..ee67aa8
--- /dev/null
+++ b/core/trivial/src/main/javadoc/org/onlab/onos/net/trivial/topology/provider/impl/package.html
@@ -0,0 +1,3 @@
+<body>
+Built-in protocol-agnostic topology builder & provider.
+</body>
\ No newline at end of file