diff --git a/doc/src/sgml/datatype.sgml b/doc/src/sgml/datatype.sgml
index 7c341c8e3f..e118a689c8 100644
--- a/doc/src/sgml/datatype.sgml
+++ b/doc/src/sgml/datatype.sgml
@@ -3264,13 +3264,13 @@ SELECT person.name, holidays.num_weeks FROM person, holidays
         <entry><type>lseg</type></entry>
         <entry>32 bytes</entry>
         <entry>Finite line segment</entry>
-        <entry>((x1,y1),(x2,y2))</entry>
+        <entry>[(x1,y1),(x2,y2)]</entry>
        </row>
        <row>
         <entry><type>box</type></entry>
         <entry>32 bytes</entry>
         <entry>Rectangular box</entry>
-        <entry>((x1,y1),(x2,y2))</entry>
+        <entry>(x1,y1),(x2,y2)</entry>
        </row>
        <row>
         <entry><type>path</type></entry>
diff --git a/src/include/catalog/pg_type.dat b/src/include/catalog/pg_type.dat
index 8c145c00be..42adc184d7 100644
--- a/src/include/catalog/pg_type.dat
+++ b/src/include/catalog/pg_type.dat
@@ -185,24 +185,24 @@
   typinput => 'point_in', typoutput => 'point_out', typreceive => 'point_recv',
   typsend => 'point_send', typalign => 'd' },
 { oid => '601', array_type_oid => '1018',
-  descr => 'geometric line segment \'(pt1,pt2)\'',
+  descr => 'geometric line segment \'[pt1, pt2]\'',
   typname => 'lseg', typlen => '32', typbyval => 'f', typcategory => 'G',
   typsubscript => 'raw_array_subscript_handler', typelem => 'point',
   typinput => 'lseg_in', typoutput => 'lseg_out', typreceive => 'lseg_recv',
   typsend => 'lseg_send', typalign => 'd' },
 { oid => '602', array_type_oid => '1019',
-  descr => 'geometric path \'(pt1,...)\'',
+  descr => 'geometric path \'(pt1, ...)\'',
   typname => 'path', typlen => '-1', typbyval => 'f', typcategory => 'G',
   typinput => 'path_in', typoutput => 'path_out', typreceive => 'path_recv',
   typsend => 'path_send', typalign => 'd', typstorage => 'x' },
 { oid => '603', array_type_oid => '1020',
-  descr => 'geometric box \'(lower left,upper right)\'',
+  descr => 'geometric box \'pt-lower-left, pt-upper-right\'',
   typname => 'box', typlen => '32', typbyval => 'f', typcategory => 'G',
   typdelim => ';', typsubscript => 'raw_array_subscript_handler',
   typelem => 'point', typinput => 'box_in', typoutput => 'box_out',
   typreceive => 'box_recv', typsend => 'box_send', typalign => 'd' },
 { oid => '604', array_type_oid => '1027',
-  descr => 'geometric polygon \'(pt1,...)\'',
+  descr => 'geometric polygon \'(pt1, ...)\'',
   typname => 'polygon', typlen => '-1', typbyval => 'f', typcategory => 'G',
   typinput => 'poly_in', typoutput => 'poly_out', typreceive => 'poly_recv',
   typsend => 'poly_send', typalign => 'd', typstorage => 'x' },