FYI maybe people know this trick but if you want to simulate the v3 card spec's hidden keys {{hidden_key:A}}
to trigger world info without sending it in the prompt, but you don't have v3 support yet, you can make 3 world info entries:
{{//
vars or info you want to trigger WI but be hidden
}}
Make sure to set their order appropriately.
In ST since the middle block isn't technically in a comment it does seem to trigger other WI entries, but since it ends up surrounded by a comment block it then gets elided before being put into the prompt. So it triggers WI but doesn't get sent and pollute your prompt. I've been using this to experiment with vars, in my pic I can make another lorebook entry that triggers on wi_var_chuck()
if it's unset/empty or wi_var_chuck(fuck and suck)
and prioritize one over the other using exclusion groups etc. I don't know if this works in other frontends and it's kind of a hacky approach, but it does leave my prompts clean from the usual shit I've seen people use to track variables. Hoping v3 spec gets a little more traction from ST soon.