minor

1-js/07-object-oriented-programming/01-property-descriptors/article.md

@@ -271,7 +271,7 @@ So, we can set many properties at once.
 
 ## Object.getOwnPropertyDescriptors
 
-To get many descriptors at once, we can use the method [Object.getOwnPropertyDescriptors(obj)](mdn:js/Object/getOwnPropertyDescriptors).
+To get all property descriptors at once, we can use the method [Object.getOwnPropertyDescriptors(obj)](mdn:js/Object/getOwnPropertyDescriptors).
 
 Together with `Object.defineProperties` it can be used as a "flags-aware" way of cloning an object:
 
@@ -289,6 +289,8 @@ for(let key in user) {
 
 ...But that does not copy flags. So if we want a "better" clone then `Object.defineProperties` is preferred.
 
+Another difference is that `for..in` ignores symbolic properties, but `Object.getOwnPropertyDescriptors` returns *all* property descriptors including symbolic ones.
+
 ## Sealing an object globally
 
 Property descriptors work at the level of individual properties.

1-js/07-object-oriented-programming/06-prototype-methods/article.md

@@ -51,14 +51,14 @@ alert(rabbit.jumps); // true
 
 The descriptors are in the same format as described in the chapter <info:property-descriptors>.
 
-We can use `Object.create` to perform a full object cloning, like this:
+We can use `Object.create` to perform an object cloning more powerful than copying properties in `for..in`:
 
 ```js
 // fully identical shallow clone of obj
-let clone = Object.create(obj, Object.getOwnPropertyDescriptors(obj));
+let clone = Object.create(Object.getPrototypeOf(obj), Object.getOwnPropertyDescriptors(obj));
 ```
 
-This call makes a truly exact copy of `obj`, including all properties: enumerable and non-enumerable, data properties and setters/getters -- everything, and with the right `[[Prototype]]`. But not an in-depth copy of course.
+This call makes a truly exact copy of `obj`, including all properties: enumerable and non-enumerable, data properties and setters/getters -- everything, and with the right `[[Prototype]]`.
 
 ## Brief history