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Update TVServices.md

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@ -54,13 +54,17 @@ All of this is accomplished by using a combination of some, or all, of the follo
* `Characteristic::IsConfigured()` - this Characteristic determines whether an Input Source is allowed to appear as a choice in the Input Source Selector of the Home App. If IsConfigured() is defined and set to 0, the Input Source will appear in the Settings page, but it will be excluded as a choice from the Input Source Selector. If IsConfigured() is defined and set to 1, the Input Source will appear in the Settings page, and will also be included as a choice in the Input Source Selector. If `Characteristic::IsConfigured()` is not defined for an Input Source, that source will still appear as a choice in the Input Source Selector, but it will *not* appear in the list of Input Sources found on the Settings page. This means you will not be able to rename the Input Source from the Home App, nor toggle it as an allowable choice in the Input Selector (see below)
* `Characteristic::CurrentVisibilityState()` and `Characteristic::TargetVisibilityState()` - these two Characteristics work in tandem much like any current-state/target-state pair. When these are defined for an Input Source, a checkbox toggle appears next to the name of the Input Source on the Settings page, provided `Characteristic::IsConfigured()` has also been defined. Clicking the checkbox causes the Home App to toggle the TargetVisibilityState between 0 to 1, where 0 ironically means the checkbox is *checked*, and 1 means it is *unchecked* (the reverse of what you might expect!). If you read this update in HomeSpan you can then use `setVal()` to change the CurrentVisibiltyState() to match the TargetVisibilityState(). Setting CurrentVisibilityState() to 0 means the Input Source appears as a choice in the Input Source Selector. Setting CurrentVisibilityState() to 1 means it does not appear as a selection. Note these features only operate if an ID has been set for the Input Source with `Characteristic::Identifier()`, and IsConfigured() has been defined and set to 1.
* `Characteristic::CurrentVisibilityState()` and `Characteristic::TargetVisibilityState()` - these two Characteristics work in tandem much like any current-state/target-state pair. When these are defined for an Input Source, a checkbox toggle appears next to the name of the Input Source on the Settings page, provided `Characteristic::IsConfigured()` has also been defined. Clicking the checkbox causes the Home App to toggle the TargetVisibilityState between 0 to 1, where 0 ironically means the checkbox is *checked*, and 1 means it is *unchecked* (the reverse of what you might expect!). If you read this update in HomeSpan you can then use `setVal()` to change the CurrentVisibiltyState() to match the TargetVisibilityState(). Setting CurrentVisibilityState() to 0 means the Input Source appears as a choice in the Input Source Selector. Setting CurrentVisibilityState() to 1 means it does not appear as a selection. Note these features only operate if an ID has been set for the Input Source with `Characteristic::Identifier()`, and IsConfigured() has been defined and set to 1
### Examples
Please see [*File → Examples → HomeSpan → Other Examples → Television*](../Other%20Examples/Television) for a complete worked example demonstrating the effects of using different combinations of the above Characteristics. Also, see the [HomeSpan Projects](https://github.com/topics/homespan) page for some real-world examples of Sony and Samsung TV sketches that use RFControl and an Infrared LED to control TV Power and Input Source from the Home App.
Please see [*File → Examples → HomeSpan → Other Examples → Television*](../Other%20Examples/Television) for a complete worked example demonstrating the effects of using different combinations of the above Characteristics. Also, don't forget to check out the [HomeSpan Projects](https://github.com/topics/homespan) page for some real-world examples of TV sketches and controllers.
### Credits
Much thanks to @unreality for the PR to include Television codes and associated functionality!