clarify custom JVM vs built-in language in docs.

README.md

@@ -74,10 +74,10 @@ As of Mosaic 0.4.0 / DBR 13.3 LTS (subject to change in follow-on releases)...
 
 __Additional Notes:__ 
 
-As of Mosaic 0.4.0 (subject to change in follow-on releases)...
+Mosaic is a custom JVM library that extends spark, which has the following implications in DBR 13.3 LTS:
 
 1. [Unity Catalog](https://www.databricks.com/product/unity-catalog): Enforces process isolation which is difficult to accomplish with custom JVM libraries; as such only built-in (aka platform provided) JVM APIs can be invoked from other supported languages in Shared Access Clusters. 
-2. [Volumes](https://docs.databricks.com/en/connect/unity-catalog/volumes.html): Along the same principle of isolation, clusters (both assigned and shared access) can read Volumes via relevant built-in readers and writers or via custom python calls which do not involve any custom JVM code.
+2. [Volumes](https://docs.databricks.com/en/connect/unity-catalog/volumes.html): Along the same principle of isolation, clusters can read Volumes via relevant built-in (aka platform provided) readers and writers or via custom python calls which do not involve any custom JVM code.
 
 ### Mosaic 0.3.x Series
 

docs/source/index.rst

@@ -81,11 +81,13 @@ As of Mosaic 0.4.0 / DBR 13.3 LTS (subject to change in follow-on releases):
      API changes, more `here <https://docs.databricks.com/en/udf/index.html>`_.
 
 .. note::
+   Mosaic is a custom JVM library that extends spark, which has the following implications in DBR 13.3 LTS:
+
    * `Unity Catalog <https://www.databricks.com/product/unity-catalog>`_ enforces process isolation which is difficult
      to accomplish with custom JVM libraries; as such only built-in (aka platform provided) JVM APIs can be invoked from
      other supported languages in Shared Access Clusters.
-   * Clusters (both Assigned and Shared Access) can read `Volumes <https://docs.databricks.com/en/connect/unity-catalog/volumes.html>`_
-     via relevant built-in readers and writers or via custom python calls which do not involve any custom JVM code.
+   * Clusters can read `Volumes <https://docs.databricks.com/en/connect/unity-catalog/volumes.html>`_ via relevant
+     built-in (aka platform provided) readers and writers or via custom python calls which do not involve any custom JVM code.
 
 
 Version 0.3.x Series

docs/source/usage/installation.rst

@@ -34,11 +34,13 @@ As of Mosaic 0.4.0 / DBR 13.3 LTS (subject to change in follow-on releases):
      API changes, more `here <https://docs.databricks.com/en/udf/index.html>`_.
 
 .. note::
+   Mosaic is a custom JVM library that extends spark, which has the following implications in DBR 13.3 LTS:
+
    * `Unity Catalog <https://www.databricks.com/product/unity-catalog>`_ enforces process isolation which is difficult
      to accomplish with custom JVM libraries; as such only built-in (aka platform provided) JVM APIs can be invoked from
      other supported languages in Shared Access Clusters.
-   * Clusters (both Assigned and Shared Access) can read `Volumes <https://docs.databricks.com/en/connect/unity-catalog/volumes.html>`_
-     via relevant built-in readers and writers or via custom python calls which do not involve any custom JVM code.
+   * Clusters can read `Volumes <https://docs.databricks.com/en/connect/unity-catalog/volumes.html>`_ via relevant
+     built-in (aka platform provided) readers and writers or via custom python calls which do not involve any custom JVM code.
 
 If you have cluster creation permissions in your Databricks
 workspace, you can create a cluster using the instructions