Insert values from a record variable into a table

I am developing a user-defined function that takes two arguments: create or replace function gesio( events_table_in regclass, events_table_out regclass) returns void as $$ ... $$ events_table_in and events_table_out have exactly the same schema. Simply explained, I loop through the records of events_table_in, manipulate the records and want to append (insert) the manipulated records into events_table_out in the following fashion: OPEN recCurs FOR execute format('SELECT * FROM %s order by session_id, event_time', event_table_in); LOOP FETCH recCurs into rec; if not found then exit; end if; -- 1. do something with rec -- 2. insert the rec into events_table_out end loop; How can I save the rec into events_table_out?