How to debug and obtain CorelDRAW top-level objects ?

[wzddl]

<xsl:template match="uiConfig/items">
		<xsl:copy>
			<xsl:apply-templates select="node()|@*"/>
			
			<!--Creates your UI, HTML file --> 
			<!-- type="browserEdge" -->
			<!--GuidC-->
			<itemData guid="df6470af-33d9-4bc8-920b-f7ba307482b5"
				type="browserEdge"
				suppressDialogs="false"
				disableContextMenu="false"
				href="[VGAppAddonsDir]/DemoHtmlPlugin/index.html"
				enable="true" />
            ...
            ...
            ...
          </xsl:copy>
</xsl:template>

1. When I changed the renderer from browser to browserEdge, I found that window. external Application is undefined
2. How to open the debug tool of the rendering browser， need to debug and view object structure
   Thanks

[bonus630]

I don't know, there is no documentation on this.