A simple question

The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/9.3/static/sql-keywords-appendix.html
Description:

Hello, my client has a plethora of reserved words in their PostgreSQL
database using Greenplum.  They don't wish to use the " " to allow for them
to remain....my question is, do you have a parameter I can set to bypass
PostgreSQL from flagging the reserved word all together?

Thank you so very much.

Xavier 
californiasailor@yahoo.com