red>> red
== true
red>> type? red
== logic!
Just curious to know why is red a boolean variable?
(perhaps unrelated) Side note: rebol in REBOL 2.7 console is of type object!.
It is defined in the "Red base environment definitions" file as
Red: true ;-- ultimate Truth ;-) (pre-defines Red word)
https://github.com/red/red/blob/9c355efa76ac1b5c17a8cbf359c5d7ab05a6a013/environment/scalars.red#L13
This file contains other initial environment definitions such as:
escape: #"^["
slash: #"/"
sp: space: #" "
...
As @kealist points out in the comment below, it serves a useful purpose:
It stops the Red [] header in scripts from causing an error.
In Rebol, the rebol word is bound to the system object so I expect the Red will follow a similar approach.