[DOC] Tokenizers - Character group

_analyzers/tokenizers/character-group-tokenizer.md

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+---
+layout: default
+title: Character Group Tokenizer
+parent: Tokenizers
+nav_order: 20
+has_children: false
+has_toc: false
+---
+
+# Character group tokenizer
+
+The character group tokenizer is designed to segment text into tokens based on the presence of specific characters. This tokenizer is ideal for scenarios where a straightforward tokenization approach is required, avoiding the complexity and overhead associated with pattern-based tokenizers.
+
+The character group tokenizer accepts the following parameters:
+1. `tokenize_on_chars`: Specifies a set of characters on which the text should be tokenized. When any character from this set is encountered, a new token is created. For example, single characters `(e.g., -, @)` and character classes such as `whitespace`, `letter`, `digit`, `punctuation`, and `symbol`.
+4. `max_token_length`: This parameter defines the maximum length allowed for a token. If a token exceeds this specified length, it will be split at intervals defined by `max_token_length`. The default value is `255`.
+
+## Example of the character group tokenizer
+
+We can tokenize the on characters such as `whitespace`, `-` and `:`.
+
+```json
+POST _analyze
+{
+  "tokenizer": {
+    "type": "char_group",
+    "tokenize_on_chars": [
+      "whitespace",
+      "-",
+      ":"
+    ]
+  },
+  "text": "Fast-cars: drive fast!"
+}
+```
+{% include copy-curl.html %}
+
+By analyzing the text "Fast-cars: drive fast!", we can see the specified characters have been removed: 
+
+```
+Fast cars drive fast
+```

_analyzers/tokenizers/index.md

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 layout: default
 title: Tokenizers
-nav_order: 60
+nav_order: 10
 has_children: false
 has_toc: false
 redirect_from: