diff --git a/docs/Reference.md b/docs/Reference.md
index 5597a19..44b2d64 100644
--- a/docs/Reference.md
+++ b/docs/Reference.md
@@ -10,10 +10,13 @@ At runtime this HomeSpan will create a global object named `homeSpan` that suppo
 
 * `void begin(Category catID, char *displayName, char *hostNameBase, char *modelName);` 
   * Initializes HomeSpan
-  * **Must** be called at the beginning of each sketch before any other HomeSpan functions
+  * **Must** be called at the beginning of each sketch (typically in `setup()`) before any other HomeSpan functions
   * All arguments are **optional**
     * *catID* - the HAP Category HomeSpan broadcasts for pairing to HomeKit.  Default is [Category::Lighting](Categories.md)
     * *displayName* - the MDNS display name broadcast by HomeSpan.  Default is "HomeSpan Server"
     * *hostNameBase* - the full MDNS host name is broadcast by HomeSpan as *hostNameBase-DeviceID*.local, where DeviceID is a unique 6-byte code generated automatically by HomeSpan.  Default is "HomeSpan"
     * *modelName* - the HAP model name HomeSpan broadcasts for pairing to HomeKit.  Default is "HomeSpan-ESP32"
-  
+ 
+ * `void poll()`
+   * Checks for HAP requests, local commands, and device activity
+   * **Must** be called repeatedly in each sketch (typically placed at the top of `loop()`)