Update streams.md

docs/pages/streams.md

@@ -9,13 +9,11 @@ Status updates are delivered via _streams_.
 
 A stream defines how status updates are delived, including:
 
-- status module and code, e.g. tlc/2
-- attribute set
-- update rate
-- aggregation, e.g. sum and average
-- chunking. ie. gather multiple events in a single message
-- defaults state
-- timeouts
+- module and code, e.g. tlc/2
+- attributes and their settings, e.g. live or update rate
+- aggregation, e.g. sum or average
+- default state (on/off)
+- pruning, e.g. timeout
 
 A node can have ome or more streams configured for each status type. 
 
@@ -40,8 +38,7 @@ To receive data the stream must be started and you must be subscribed to the ass
 Starting and stopping a stream controls whether data is published to the
 associated topic path on the broker. If a stream is configured as on by default, you don't need to manually start it.
 
-Subscribing to the associated topic path controls whether you receive
-data from the broker.
+Subscribing to the associated topic path controls whether you receive data from the broker.
 
 ## Starting and Stopping
 When you start a stream, it starts publishing data to broker,
@@ -64,26 +61,23 @@ When you stop a stream, data is no longer publishhed to the broker.
 Consumers will no longer receive data, even if they are still subscribed to the relevant topic path.
 
 ## Stream configuration
-### Status module and id
+### Module and id
 Identifies the status with module name, and status code id, e.g. `tlc/2`.
 
 ### Attributes
-The set of attributes to include in status updates. For each attribute:
-- Type: Live (Send on Change), Lazy (send when other attributes change)
-- Aggregation: off, count, average, median, max, min. Aggration is done according to the key interval.
+The set of attributes to include in status updates, and their settings. For each attribute:
+- Type: Send on Change, Send Along (send when other attributes change)
+- Aggregation: off, count, average, median, max, min. Aggration is done according to the update rate.
 
-### Key Interval
+### Update Rate
 Interval to send full updates, which are retained on the broker.
 
-### Delta Interval
-Interval to send delta updates which contain only attributes that changed
-and are not retained on the broker.
+### Delta Rate
+Interval to send delta updates which contain only attributes that changed and are not retained on the broker.
 
-If set to live, delta updates are send immediately when attributes changes.
-
-If set to a number, it indicating the number of delta updates between key updates.
-Update are send according to keyframe and delta intervals, not immediatelely
-when attributes change.
+Options:
+- send on change: Delta updates are send immediately when attributes changes.
+- interval: Delta update are send according to delta intervals.
 
 ### Default State
 A stream configured as off by default must be started before it publishes data to the broker.