It's true.  Searing "Factor language" results in many *official* site:
factorcode.org, wikipedia.org, github.com/slavapestov/factor,
factor-language.blogspot.com, etc. and offers many general
information.

But for some specific task, things become worse.
For a real example which I have encountered Yesterday: "Factor
language hex number".
The first five pages of google search result has only one link(IIRC)
which related to Factor language:
http://factor-language.blogspot.com/2009/09/advanced-floating-point-features.html
It is useful, but not helpful to me(a novice of Factor).

"Factor language hex number site:stackoverflow.com" is worse.
In fact, http://stackoverflow.com/questions/tagged/factor has the
correct brief summary "Factor is a concatenative programming language
that was influenced by Forth, Joy and Lisp." but has less than one
thousand posts and most of them are not related to Factor language.

Finally I got the correct information from
http://docs.factorcode.org/content/article-syntax-integers.html .
To be honest, I did some guessing and got the answer(0x12) before find the link.
But for other task, guessing may work for me in that day losing
comprehensive information(e.g. the binary literal) and most
importantly, surprise me in the future.

In my personal opinion, there are at least two differences between C and Factor:
* C is more popular than Factor.
* unlike "C", "factor" has many meanings in different domains: math,
engineering or even variable name.

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