What is "ctr" file extension?

Question

What is "ctr" file extension? Recently I found one site with a file named "create.ctr", what language is that?

Answer 1

I can't find any resource about programming languages suggesting (or enforcing) a .ctr extension.

If the website you linked is using Apache, they may be using mod_mime and .ctr might not mean anything.

You may have better luck with this question on Super User.

Answer 2

File Extension .CTR Details

http://filext.com/file-extension/CTR

File extension CTR

http://www.file-extensions.org/ctr-file-extension

File Extension CTR and CTR File Format

http://www.computerfileextensions.com/file-extensions.php/CTR