diff --git a/main/resources/docs/signal-options.txt b/main/resources/docs/signal-options.txt
index 5e29540..c2974e8 100644
--- a/main/resources/docs/signal-options.txt
+++ b/main/resources/docs/signal-options.txt
@@ -25,6 +25,7 @@ All options are available for all signal creator calls:
 `:coords` ------ Custom ?[line column] to override auto signal callsite info
 
 `:elidable?` --- Should signal be subject to compile-time elision? (default true)
+`:allow?` ------ Custom override for usual runtime filtering (true => ALWAYS create signal)
 `:trace?` ------ Should tracing be enabled for `:run` form?
 
 `:sample` ------ Sample ?rate ∈ℝ[0,1] for random signal sampling (0.75 => allow 75% of signals, nil => allow all)
diff --git a/wiki/1-Getting-started.md b/wiki/1-Getting-started.md
index cd6bd62..d855a8d 100644
--- a/wiki/1-Getting-started.md
+++ b/wiki/1-Getting-started.md
@@ -165,7 +165,7 @@ Both have several options, see their docstrings (links above) for details.
 
 ## Filtering
 
-A signal will be provided to a handler iff ALL of the following are true:
+A signal will be provided to a handler iff **ALL** of the following are true:
 
 - 1. Signal **call filters** pass:
 	- a. Compile time: sample rate, kind, ns, id, level, when form, rate limit
@@ -178,7 +178,9 @@ A signal will be provided to a handler iff ALL of the following are true:
 - 3. **Call transform** `(fn [signal]) => ?modified-signal` returns non-nil
 - 4. **Handler transform** `(fn [signal]) => ?modified-signal` returns non-nil
 
-> Transform fns provides a flexible way to modify and/or filter signals by arbitrary signal data/content conditions (return nil to skip handling).
+> 👉 Transform fns provides a flexible way to modify and/or filter signals by arbitrary signal data/content conditions (return nil to skip handling).
+
+> 👉 Call and handler filters are **additive** - so handlers can be *more* but not *less* restrictive than call filters allow. This makes sense: call filters decide if a signal can be created. Handler filters decide if a particular handler is allowed to handle a created signal.
 
 Quick examples of some basic filtering:
 
diff --git a/wiki/3-Config.md b/wiki/3-Config.md
index 66eb744..4238dfd 100644
--- a/wiki/3-Config.md
+++ b/wiki/3-Config.md
@@ -2,7 +2,7 @@ See below for config by topic-
 
 # Filtering
 
-A signal will be provided to a handler iff ALL of the following are true:
+A signal will be provided to a handler iff **ALL** of the following are true:
 
 - 1. Signal **call filters** pass:
 	- a. Compile time: sample rate, kind, ns, id, level, when form, rate limit
@@ -15,10 +15,24 @@ A signal will be provided to a handler iff ALL of the following are true:
 - 3. **Call transform** `(fn [signal]) => ?modified-signal` returns non-nil
 - 4. **Handler transform** `(fn [signal]) => ?modified-signal` returns non-nil
 
-> Transform fns provides a flexible way to modify and/or filter signals by arbitrary signal data/content conditions (return nil to skip handling).
+> 👉 Transform fns provides a flexible way to modify and/or filter signals by arbitrary signal data/content conditions (return nil to skip handling).
+
+> 👉 Call and handler filters are **additive** - so handlers can be *more* but not *less* restrictive than call filters allow. This makes sense: call filters decide if a signal can be created. Handler filters decide if a particular handler is allowed to handle a created signal.
 
 See [`help:filters`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#help:filters) for more about filtering.
 
+## Debugging filters
+
+Telemere offers a *lot* of filtering control, so real systems can get quite complex. There's a lot of tools to help debug, including:
+
+| Util                                                                                                                |                                            |
+| ------------------------------------------------------------------------------------------------------------------- | ------------------------------------------ |
+| [`with-signal`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#with-signal)               | To see *last* signal created in body       |
+| [`with-signals`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#with-signals)             | To see *all* signals created in body       |
+| [`get-filters`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#get-filters)               | To see all call filters in current context |
+| [`without-filters`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#without-filters)       | To disable filters in body                 |
+| [`get-handlers-stats`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#get-handlers-stats) | To see handler call stats                  |
+
 # Signal handlers
 
 See section [4-Handlers](./4-Handlers).