What is currently in the FAQ

The FAQ does not talk about the s///g case explicitly
FAQ has: "How can I expand variables in text strings?"
Really: "How do I use Perl's double-quotish strings as a light-weight and familiar templating engine?"

We've seen this already

chop( my $string = eval "<<_END_\n$template\n_END_" );
die $@ if $@;