How to add Description to Virtual tables

Hello Experts,

We can add Description/Comment on Tables in our schema by the following 2 ways.

1.Right click on the table  -> Open definition -> Go to further properties.

  Here we can write description.

2.By using the  following query also we can add Comments.

COMMENT ON TABLE "SCHEMA"."TABLE" IS  'SALES TABLE VERSION_1'

This tables description we can see from "SYS"."CS_TABLES"

Right now our requirement is to add Description/Comment on Virtual Tables.

I want to Know Is there any way to add the Description/Comment on Virtual Tables.

Please don't say its not possible.Because i can see the column called DESCRIPTION in "SYS"."VIRTUAL_TABLES_" with NULL Values.