@@ -104,9 +104,9 @@ ALTER COLLATION <replaceable>name</replaceable> SET SCHEMA <replaceable>new_sche
104104 <title>Notes</title>
105105
106106 <para>
107- Whenusing collations provided by the ICU library , theICU -specific version
108- of the collator is recorded in the system catalog when the collationobject
109- is created. When the collation is used, the current version is
107+ Whena collation object is created , theprovider -specific version of the
108+ collation is recorded in the system catalog. When the collationis used,
109+ the current version is
110110 checked against the recorded version, and a warning is issued when there is
111111 a mismatch, for example:
112112<screen>
@@ -117,21 +117,24 @@ HINT: Rebuild all objects affected by this collation and run ALTER COLLATION pg
117117 A change in collation definitions can lead to corrupt indexes and other
118118 problems because the database system relies on stored objects having a
119119 certain sort order. Generally, this should be avoided, but it can happen
120- in legitimate circumstances, such as when
120+ in legitimate circumstances, such as when upgrading the operating system
121+ to a new major version or when
121122 using <command>pg_upgrade</command> to upgrade to server binaries linked
122123 with a newer version of ICU. When this happens, all objects depending on
123124 the collation should be rebuilt, for example,
124125 using <command>REINDEX</command>. When that is done, the collation version
125126 can be refreshed using the command <literal>ALTER COLLATION ... REFRESH
126127 VERSION</literal>. This will update the system catalog to record the
127- currentcollator version and will make the warning go away. Note that this
128+ currentcollation version and will make the warning go away. Note that this
128129 does not actually check whether all affected objects have been rebuilt
129130 correctly.
130131 </para>
131132 <para>
132133 When using collations provided by <literal>libc</literal>, version
133134 information is recorded on systems using the GNU C library (most Linux
134- systems), FreeBSD and Windows.
135+ systems), FreeBSD and Windows. When using collations provided by ICU, the
136+ version information is provided by the ICU library and is available on all
137+ platforms.
135138 </para>
136139 <note>
137140 <para>