Cursor problem

Hello All,
How do I create a cursor in psql .

I have a function which opens a cursor .
SampleDB=# create function reffunc(refcursor) returns refcursor as $$
SampleDB$# begin
SampleDB$# open $1 for select col from test;
SampleDB$# return $1;
SampleDB$# end;
SampleDB$# $$ language sql;
ERROR: syntax error at or near "open" at character 67
LINE 3: open $1 for select col from test;

I am not able to create a cursor , it errors out at 'open '


I tried a still more simple one
^
SampleDB=# create or replace function test(refcursor) returns refcursor as $$
SampleDB=#begin
SampleDB$# syscur refcursor;
SampleDB=#end;
SampleDB$# $$ language sql;
ERROR: syntax error at or near "syscur" at character 68
LINE 2: syscur refcursor;

How do I create a cursor .

Any help asap ?
Thanks
Vidya

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