Why syntax highlighting is not working?

Question

I have edited this question with lang tags on this question -Zipping/archiving old log files?

As suggested here -> https://meta.stackexchange.com/a/184109/168386

with <!-- language: lang-xml --> for XML and <!-- language: lang-cs --> for C#

Still I don't know why syntax highlighting is not working.

Answer 1

Syntax highlighting has to be enabled on the site first. I went ahead and flipped it on, so those directives should work from now on.