diff --git a/doc/src/sgml/datatype.sgml b/doc/src/sgml/datatype.sgml
new file mode 100644
index 67d0c34..fbc3576
*** a/doc/src/sgml/datatype.sgml
--- b/doc/src/sgml/datatype.sgml
*************** FROM generate_series(-3.5, 3.5, 1) as x;
*** 750,756 ****
       floating-point arithmetic does not follow IEEE 754, these values
       will probably not work as expected.)  When writing these values
       as constants in an SQL command, you must put quotes around them,
!      for example <literal>UPDATE table SET x = 'Infinity'</>.  On input,
       these strings are recognized in a case-insensitive manner.
      </para>
  
--- 750,756 ----
       floating-point arithmetic does not follow IEEE 754, these values
       will probably not work as expected.)  When writing these values
       as constants in an SQL command, you must put quotes around them,
!      for example <literal>UPDATE table SET x = '-Infinity'</>.  On input,
       these strings are recognized in a case-insensitive manner.
      </para>