[DOCS] Various VisualScript* nodes

doc/classes/VisualScriptPreload.xml

@@ -1,8 +1,14 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <class name="VisualScriptPreload" inherits="VisualScriptNode" category="Core" version="3.0.alpha.custom_build">
 	<brief_description>
+		Creates a new [Resource] or loads one from the filesystem.
 	</brief_description>
 	<description>
+		Creates a new [Resource] or loads one from the filesystem.
+		[b]Input Ports:[/b]
+		none
+		[b]Output Ports:[/b]
+		- Data (object): [code]res[/code]
 	</description>
 	<tutorials>
 	</tutorials>
@@ -26,6 +32,7 @@
 	</methods>
 	<members>
 		<member name="resource" type="Resource" setter="set_preload" getter="get_preload">
+			The [Resource] to load.
 		</member>
 	</members>
 	<constants>