try adding spaces on the lines after the back-slash eg,
Code:
auth_param basic program\
$B\
acl pam proxy_auth REQUIRED\
is read as:
Code:
auth_param basic program$Bacl pam proxy_auth REQUIRED
but
Code:
(space)auth_param basic program\
(space) $B\
(space) acl pam proxy_auth REQUIRED\
is read as:
Code:
auth_param basic program ; $B ; acl pam proxy_auth REQUIRED ;