Merge pull request #2009 from flowforge/zj-docs-snapshots

docs: More explicit content of Snapshots

docs/user/snapshots.md

@@ -4,8 +4,12 @@ navTitle: Snapshots
 
 # Snapshots
 
-A Snapshot is a point-in-time backup of a Node-RED instance. It captures the flows,
-credentials and runtime settings.
+A Snapshot is a point-in-time backup of a Node-RED instance. It captures:
+1. The flows
+2. Credentials
+3. Environment variables
+4. NPM packages, with locked versions
+5. Runtime settings.
 
 They can also be pushed to devices connected to the instance.
 
@@ -55,4 +59,4 @@ Using the [Node-RED Tools Plugin](./node-red-tools.md) it is also possible to cr
 Snapshots in a local copy of Node-RED and push them back into your FlowForge
 managed Node-RED instances.
 
-For more information, see the [Node-RED Tools Plugin guide](./node-red-tools.md).
+For more information, see the [Node-RED Tools Plugin guide](./node-red-tools.md).