Add offset feature toggling documentation

Author: Kirill Nesmeyanov

Writerside/labels.list

@@ -43,8 +43,8 @@
 
     <secondary-label id="wip" name="WIP" color="red">Work in progress</secondary-label>
     <secondary-label id="beta" name="β" color="tangerine">Beta</secondary-label>
-    <secondary-label id="tl1.1" name="Parser v1.1" color="strawberry">Available in type-lang/parser 1.1+</secondary-label>
-    <secondary-label id="tl1.2" name="Parser v1.2" color="strawberry">Available in type-lang/parser 1.2+</secondary-label>
-    <secondary-label id="tl1.4" name="Parser v1.4" color="strawberry">Available in type-lang/parser 1.4+</secondary-label>
-    <secondary-label id="r1.1" name="Available in Reader v1.1" color="strawberry">Available in type-lang/reader 1.1+</secondary-label>
+    <secondary-label id="tl1.1" name="parser v1.1" color="strawberry">Available since type-lang/parser 1.1+</secondary-label>
+    <secondary-label id="tl1.2" name="parser v1.2" color="strawberry">Available since type-lang/parser 1.2+</secondary-label>
+    <secondary-label id="tl1.4" name="parser v1.4" color="strawberry">Available since type-lang/parser 1.4+</secondary-label>
+    <secondary-label id="r1.1" name="reader v1.1" color="strawberry">Available since type-lang/reader 1.1+</secondary-label>
 </labels>

Writerside/topics/parser/features.md

@@ -86,6 +86,26 @@ Square bracket list types not allowed in "Example[]"
 ```
 {collapsible="true" collapsed-title="TypeLang\Parser\Exception\ParseException"}
 
+## Offsets
+
+<secondary-label ref="tl1.4"/>
+
+To enable or disable type offsets, use the `offsets: bool` flag.
+
+```php
+$parser = new TypeLang\Parser\Parser(
+    offsets: false,
+);
+
+$result = $parser->parse('Example[Type]');
+```
+
+```
+Type offsets not allowed in "Example[Type]"
+```
+{collapsible="true" collapsed-title="TypeLang\Parser\Exception\ParseException"}
+
+
 ## Callables
 
 To enable or disable callables (delegates), use the `callables: bool` flag.