docs; encapsulation legibility fixes

doc/site/classes.markdown

@@ -371,8 +371,8 @@ value is `null`.
 All fields are *private* in Wren—an object's fields can only be directly
 accessed from within methods defined on the object's class. 
 
-In short, if you want to make a property of an object visible, **you need to define a
-getter to expose it**:
+In short, if you want to make a property of an object visible,
+**you need to define a getter to expose it**:
 
     :::wren
     class Rectangle {
@@ -382,7 +382,8 @@ getter to expose it**:
       // ...
     }
 
-To allow outside code to modify the field, **you need to provide setters to provide access**:
+To allow outside code to modify the field,
+**you need to provide setters to provide access**:
 
     :::wren
     class Rectangle {
@@ -392,8 +393,8 @@ To allow outside code to modify the field, **you need to provide setters to prov
 
 This might be different from what you're used to, so here are two important facts:
 
-- You can't access fields on another instance of your own class (unlike C++ and Java).
 - You can't access fields from a base class.
+- You can't access fields on another instance of your own class.
 
 Here is an example in code:
 
@@ -406,14 +407,17 @@ Here is an example in code:
     
     class Rectangle is Shape {
       construct new() {
-        //This will print null! _shape from the parent class is private,
-        //so we are really just reading `_shape` from `this`, which has not been set.
+        //This will print null!
+        //_shape from the parent class is private,
+        //we are reading `_shape` from `this`,
+        //which has not been set, so returns null.
         System.print("I am a %(_shape)")
         
         //a local variable, all variables are private
         _width = 10
         var other = Rectangle.new()
-        //other._width is not accessible from here, 
+
+        //other._width is not accessible from here,
         //even though we are also a rectangle. The field
         //is private, and other._width is invalid syntax!
       }