group doesn't work with include?

[r3wt]

# Group Auth
Authentication Related Methods.

<!-- include(auth/signup.apib)-->
<!-- include(auth/login.apib)-->
<!-- include(auth/logout.apib)->

But none of the methods are included in generated html. if i copy them in manually and compile, it works fine. why?

EDIT was a syntax error. still alarming that no error is raised. difficult to debug.