ContextMenu: Update target & showEvent topics (#7655) (#7666)

Author: arman-boyakhchyan

api-reference/10 UI Components/dxContextMenu/1 Configuration/showEvent/showEvent.md

@@ -5,10 +5,12 @@ default: 'dxcontextmenu'
 ---
 ---
 ##### shortDescription
-Specifies properties for displaying the UI component.
+Specifies properties used to display the UI component.
 
 ---
-If you assign only a string that specifies event names on which the UI component is shown, the UI component will not apply any delay.
+If you assign only a string that specifies event names on which the UI component is shown, the UI component will not apply a delay.
 
     <!--JavaScript-->
-    showEvent: "mouseenter"
+    showEvent: "mouseenter"
+
+Assign `""` (an empty string) to **showEvent** if you want to display the component only through code (for instance, by calling the [show()](/Documentation/ApiReference/UI_Components/dxContextMenu/Methods/#show) method).

api-reference/10 UI Components/dxContextMenu/1 Configuration/target.md

@@ -10,4 +10,6 @@ The target element associated with the context menu.
 ---
 #include uiwidgets-ref-target
 
-To align the {WidgetName} against this element, use the [position](/api-reference/10%20UI%20Components/dxContextMenu/1%20Configuration/position.md '{basewidgetpath}/Configuration/#position') property.
+To align the {WidgetName} against this element, use the [position](/api-reference/10%20UI%20Components/dxContextMenu/1%20Configuration/position.md '{basewidgetpath}/Configuration/#position') property.
+
+When **target** is `undefined` and [showEvent]({basewidgetpath}/Configuration/showEvent) is related to mouse/touch inputs (the default [dxcontextmenu](Documentation/ApiReference/UI_Components/UI_Events/#dxcontextmenu) event), the component is displayed at the mouse cursor/touch location. If the [showEvent]({basewidgetpath}/Configuration/showEvent) value is not related to mouse/touch events, the component is displayed in the top-left corner of the page.