Plugins : If the author has added custom plugins to the package the appropriate 32bit/64bit architecture version of the plugin.If Apply included layout is selected, the layout will be applied to Rainmeter following installation. Layouts : If the author has added a layout to the package it will be installed in the Rainmeter\Layouts folder.The author of the package may indicate that one or more skins will automatically be loaded when the installation is complete.
This dialog lists each component that will be installed.