doc(docs.topics.basicTypes): add notes

docs/topics/basic-types.md

@@ -1,23 +1,21 @@
 [//]: # (title: Basic types)
 
-In Kotlin, everything is an object in the sense that you can call member functions and properties on any variable.
-While certain types have an optimized internal representation as primitive values at runtime (such as numbers, characters, booleans and others),
-they appear and behave like regular classes to you.
-
-This section describes the basic types used in Kotlin:
-
-* [Numbers](numbers.md) and their [unsigned counterparts](unsigned-integer-types.md)
-* [Booleans](booleans.md)
-* [Characters](characters.md)
-* [Strings](strings.md)
-* [Arrays](arrays.md)
-
-> [Learn how to perform type checks and casts in Kotlin](typecasts.md).
->
-{type="tip"}
-
-To learn about other Kotlin types, such as `Nothing`, `Any`, and `Unit`, look through the Kotlin API reference:
-
-* [`Any`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/)
-* [`Nothing`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-nothing.html)
-* [`Unit`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/)
+* ⭐ALL is an object | Kotlin ⭐
+  * == | ANY variable, you can call
+    * member functions
+    * properties
+  * NO primitive types (as | Java)
+* Platform types
+  * == types / 
+    * have an internal representation -- as -- primitive values | runtime
+    * == class' appearance & class' behaviour
+  * _Example:_
+    * [Numbers](numbers.md) and their [unsigned counterparts](unsigned-integer-types.md)
+    * [Booleans](booleans.md)
+    * [Characters](characters.md)
+    * [Strings](strings.md)
+    * [Arrays](arrays.md)
+    * others -> check | Kotlin API
+      * [`Any`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/)
+      * [`Nothing`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-nothing.html)
+      * [`Unit`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/)