Update docs

docs/usage/others.md

@@ -25,6 +25,19 @@ $pattern = Regex::build()->capture(
 // /(\.[a-zA-Z])/
 ```
 
+Using the `lookbehind` or `lookahead` arguments you can control whether to match a subpattern without consuming characters.
+
+```php
+use Rudashi\Regex;
+
+$pattern = Regex::build()->capture(
+    callback: fn (FluentBuilder $fluent) => $fluent->exactly('.')->letter(),
+    lookbehind: true,
+);
+
+// /(?<=\.[a-zA-Z])/
+```
+
 ### `maybe`
 
 The `maybe` method matches a pattern within a group zero or one time.
@@ -39,6 +52,16 @@ $pattern = Regex::build()->maybe(
 // /(\.[a-zA-Z])?/
 ```
 
+Alternatively, you can use it to search for individual characters
+
+```php
+use Rudashi\Regex;
+
+$pattern = Regex::build()->maybe(0);
+
+// /(0?/
+```
+
 ### `oneOf`
 
 The `oneOf` method alternatively matches any of the given characters.