@@ -26,7 +26,8 @@ in order to guarantee smooth upgrades to all future 2.x versions.
2626Using Our Interfaces
2727~~~~~~~~~~~~~~~~~~~~
2828
29- ### Normal Interfaces
29+ Normal Interfaces
30+ .................
3031
3132All interfaces in the ``Symfony `` namespace are **safe for use **. That means
3233that:
@@ -44,15 +45,17 @@ Methods tagged with ``@api`` are treated as if they belonged to an API
4445interface.
4546
4647
47- ### API Interfaces
48+ API Interfaces
49+ ..............
4850
4951All interfaces tagged with ``@api `` are also **safe for implementation **. That
5052means that:
5153
5254* You can safely implement the interface.
5355
5456
55- ### Safe Operations
57+ Safe Operations
58+ ...............
5659
5760The following table summarizes the safe operations when using our interfaces:
5861
@@ -72,7 +75,8 @@ Add parameter default value Safe Safe
7275Using Our Classes
7376~~~~~~~~~~~~~~~~~
7477
75- ### Normal Classes
78+ Normal Classes
79+ ..............
7680
7781All classes in the ``Symfony `` namespace are **safe for use **. That means that:
7882
@@ -97,7 +101,8 @@ Properties and methods tagged with ``@api`` are treated as if they belonged
97101to an API class.
98102
99103
100- ### API Classes
104+ API Classes
105+ ...........
101106
102107All classes tagged with ``@api `` are also **safe for extension **. That means
103108that:
@@ -109,7 +114,8 @@ that:
109114* You can safely override public or protected methods.
110115
111116
112- ### Safe Operations
117+ Safe Operations
118+ ...............
113119
114120The following table summarizes the safe operations when using our classes:
115121