Red or Rebol: how to convert "test/a" to [test/a]

Question

I tried to do this:

 b: []
 append b  to-word "test/a"

but it generates error

* Syntax Error: invalid character in: "test/a" * Where: to *** Stack: run to-word

Answer 1

;for 30 characters

to block! "test/a"