# Ri Object **URL:** \ **Category:** Ruby\ **Created:** [February 15, 2009, 10:03pm UTC](https://www.ruby-forum.com/t/ri-object/160397 "2009-02-15T22:03:12Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![john\_maclean](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e8c25b/32.png) [@john\_maclean](https://www.ruby-forum.com/u/john_maclean)\ **Post date:** [February 15, 2009, 10:03pm UTC](https://www.ruby-forum.com/t/ri-object/160397/1 "2009-02-15T22:03:12Z")
How can i access the documentation relating to ARGV, ARGF, ARGV, DATA, ENV, FALSE, NIL, RUBY\_COPYRIGHT, RUBY\_DESCRIPTION, RUBY\_PATCHLEVEL – John M. 07739 171 531 MSc (DIC) Timezone: GMT ---
**Author:** ![john\_maclean](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e8c25b/32.png) [@john\_maclean](https://www.ruby-forum.com/u/john_maclean)\ **Post date:** [February 15, 2009, 11:08pm UTC](https://www.ruby-forum.com/t/ri-object/160397/2 "2009-02-15T23:08:46Z")
john maclean wrote: > How can i access the documentation relating to ARGV, ARGF, ARGV, DATA, > ENV, FALSE, NIL, RUBY\_COPYRIGHT, RUBY\_DESCRIPTION, RUBY\_PATCHLEVEL > > – > John M. > 07739 171 531 > MSc (DIC) > > Timezone: GMT Hi John, As far as I know, those constants are not part of Object proper, but the Ruby global space. My recommendation would be to pick up a copy of the Ruby “Pickaxe” book. The real title is “Programming Ruby”. An older version of it is available here: [http://www.rubycentral.com/book/](http://www.rubycentral.com/book/) Google also helps a lot, though you may have to dig a bit to find the information you need. I hope this helps! Sebastian