javadoc improvement
@@ -12,6 +12,9 @@ package com.fasterxml.jackson.core;
* Basic JSON-based parsers and generators do not use schemas, but some data
* formats (like many binary data formats like Thrift, protobuf) mandate
* use of schemas.
+ * Others like CSV and Java Properties may optionally use schemas (and/or use simple
+ * default schema to use if caller does not specify one) which specifies
+ * some aspects of structuring content.
*<p>
* Since there is little commonality between schemas for different data formats,
* this interface does not define much meaningful functionality for accessing
