Incorporate additional feedback in PG12 Beta 1 release.

diff --git a/releases/12/beta/12beta1.md b/releases/12/beta/12beta1.md
index fa3041e7d437cd8a73b876f823e93a436ca544ef..8f7c179d797f2812aaf0db48dffa61007255832e 100644 (file)
--- a/releases/12/beta/12beta1.md
+++ b/releases/12/beta/12beta1.md
@@ -35,15 +35,14 @@ managing a PostgreSQL database in a production environment.
 
 PostgreSQL 12 extends the abilities of several of the specialized indexing
 mechanisms. The ability to create covering indexes, i.e. the `INCLUDE` clause
-that was introduced in PostgreSQL 11, havs now been added to GiST indexes.
+that was introduced in PostgreSQL 11, has now been added to GiST indexes.
 SP-GiST indexes now support the ability to perform K-nearest neighbor (K-NN)
 queries for data types that support the distance (`<->`) operation.
 
 The amount of write-ahead log (WAL) overhead generated when creating a GiST,
 GIN, or SP-GiST index is also significantly reduced in PostgreSQL 12, which
 provides several benefits to the overall disk utilization of a PostgreSQL
-cluster as well as using features such as continuous archiving and streaming
-replication.
+cluster and features such as continuous archiving and streaming replication.
 
 ### Inlined WITH queries (Common table expressions)
 
@@ -71,7 +70,7 @@ of partitions for operations that only need to use a small number of partitions.
 PostgreSQL 12 also provides improvements to the performance of both `INSERT` and
 `COPY` into a partitioned table.  `ATTACH PARTITION` can now also be performed
 without blocking concurrent queries on the partitioned table.  Additionally, the
-ability to use foreign keys to reference partitioned tables is now allowed in
+ability to use foreign keys to reference partitioned tables is now permitted in
 PostgreSQL 12.
 
 ### JSON path queries per SQL/JSON specification
@@ -87,7 +86,7 @@ execution of highly performant lookups across sets of JSON data.
 
 ### Collations
 
-PostgreSQL 12 now supports case-insensitive and accent-insensitive collations
+PostgreSQL 12 now supports case-insensitive and accent-insensitive comparisons
 for ICU provided collations, also known as "[nondeterministic collations](https://www.postgresql.org/docs/devel/collation.html#COLLATION-NONDETERMINISTIC)".
 When used, these collations can provide convenience for comparisons and sorts,
 but can also lead to a performance penalty as a collation may need to make
@@ -104,7 +103,7 @@ This leads to improved query plans for distributions that are non-uniform.
 
 PostgreSQL 12 lets you create [generated columns](https://www.postgresql.org/docs/devel/ddl-generated-columns.html)
 that compute their values based on the contents of other columns. This feature
-provides stored generated columns, which are computed on inserts and updated and
+provides stored generated columns, which are computed on inserts and updates and
 are saved on disk. Virtual generated columns, which are computed only when a
 column is read as part of a query, are not implemented yet.
 
@@ -113,7 +112,8 @@ column is read as part of a query, are not implemented yet.
 PostgreSQL 12 introduces the pluggable table storage interface that allows for
 the creation and use of different storage mechanisms for table storage. New
 access methods can be added to a PostgreSQL cluster using the  [`CREATE ACCESS METHOD`](https://www.postgresql.org/docs/devel/sql-create-access-method.html)
-and subsequently added to tables with the new `USING` clause on `CREATE TABLE`.
+command and subsequently added to tables with the new `USING` clause on
+`CREATE TABLE`.
 
 A table storage interface can be defined by creating a new [table access method](https://www.postgresql.org/docs/devel/tableam.html).
 
@@ -123,7 +123,7 @@ access method, which currently is the only built-in method.
 ### Page Checksums
 
 The `pg_verify_checkums` command has been renamed to [`pg_checksums`](https://www.postgresql.org/docs/devel/app-pgchecksums.html)
-and now supports the ability to enable and disable page checksums across an
+and now supports the ability to enable and disable page checksums across a
 PostgreSQL cluster that is offline. Previously, page checksums could only be
 enabled during the initialization of a cluster with `initdb`.