Merge pull request #307560 from dominicbetts/central-accessibility-update

IoT Central: Add accessibility note

Author: prmerger-automator[bot]

articles/iot-central/core/howto-manage-dashboards.md

@@ -51,6 +51,9 @@ To customize the current dashboard, select **Edit**.
 
 After you select **Edit**, the dashboard is in *edit* mode. You can use the tools in the **Add a tile** panel to add tiles to the dashboard. You can customize and remove tiles on the dashboard itself. For example, to add a line chart tile to track telemetry values reported by one or more devices over time:
 
+> [!TIP]
+> For accessibility support, use line charts in preference to other chart types on your dashboards.
+
 1. Select **Start with a Visual**, **Line chart**, and then **Add tile**, or just drag the tile onto the canvas.
 
 1. To edit the tile, select its **pencil** icon. Enter a **Title** and select a **Device Group**. In the **Devices** list, select the devices to show on the tile.

articles/iot-central/core/overview-iot-central-tour.md

@@ -131,6 +131,9 @@ Data explorer exposes rich capabilities to analyze historical trends and correla
 
 * Personal dashboards can also be created to monitor what you care about. To learn more, see the [Create Azure IoT Central personal dashboards](howto-manage-dashboards.md) how-to article.
 
+> [!TIP]
+> For accessibility support, use line charts in preference to other chart types on your dashboards.
+
 ### Jobs
 
 :::image type="content" source="Media/overview-iot-central-tour/jobs.png" alt-text="Screenshot that shows the Jobs page where you can manage your application's jobs.":::