diff --git a/README.md b/README.md
index e377501c..14ddde15 100644
--- a/README.md
+++ b/README.md
@@ -48,12 +48,8 @@ Integrating CSV validation into CI processes promotes higher data integrity, rel
 * [demo.csv](tests/fixtures/demo.csv)
 
 
-## Usage
-
-Also see demo in the [GitHub Actions](https://github.com/JBZoo/Csv-Blueprint/actions/workflows/demo.yml) file.
-
 ### Schema Definition
-Define your CSV validation schema in a YAML file.
+Define your CSV validation schema in a [YAML](schema-examples/full.yml). Other formats are also available: , [JSON](schema-examples/full.json), [PHP](schema-examples/full.php).
 
 This example defines a simple schema for a CSV file with a header row, specifying that the `id` column must not be empty and must contain integer values.
 Also, it checks that the `name` column has a minimum length of 3 characters.
@@ -74,6 +70,9 @@ columns:
 
 ```
 
+
+### Full description of the scheme
+
 In the [example Yml file](schema-examples/full.yml) you can find a detailed description of all features.
 It's also covered by tests, so it's always up-to-date.
 
@@ -85,10 +84,6 @@ It's also covered by tests, so it's always up-to-date.
 * You are always free to add your option anywhere (except the `rules` list) and it will be ignored. I find it convenient for additional integrations and customization.
 
 
-### Schema file examples
-
-Available formats: [YAML](schema-examples/full.yml), [JSON](schema-examples/full.json), [PHP](schema-examples/full.php).
-
 ```yml
 # It's a full example of the CSV schema file in YAML format.
 
@@ -223,6 +218,11 @@ columns:
 ```
 
 
+## Usage
+
+You can find launch examples in the [workflow demo](https://github.com/JBZoo/Csv-Blueprint/actions/workflows/demo.yml).
+
+
 ### As GitHub Action
 
 ```yml
@@ -436,6 +436,8 @@ It's random ideas and plans. No orderings and deadlines. <u>But batch processing
 
 **Validation**
 * More aggregate rules.
+* More cell rules.
+* `required` flag for the column.
 * Custom cell rule as a callback. It's useful when you have a complex rule that can't be described in the schema file.
 * Custom agregate rule as a callback. It's useful when you have a complex rule that can't be described in the schema file.
 * Configurable keyword for null/empty values. By default, it's an empty string. But you will use `null`, `nil`, `none`, `empty`, etc. Overridable on the column level.
diff --git a/tests/Rules/Cell/RegexTest.php b/tests/Rules/Cell/RegexTest.php
index 09a395f5..19bcb4e3 100644
--- a/tests/Rules/Cell/RegexTest.php
+++ b/tests/Rules/Cell/RegexTest.php
@@ -32,6 +32,7 @@ public function testPositive(): void
         isSame('', $rule->test('abc'));
         isSame('', $rule->test('aaa'));
         isSame('', $rule->test('a'));
+        isSame('', $rule->test(''));
 
         $rule = $this->create('^a');
         isSame('', $rule->test('abc'));
diff --git a/tests/schemas/example_full.yml b/tests/schemas/example_full.yml
index c2cc0e87..a7366183 100644
--- a/tests/schemas/example_full.yml
+++ b/tests/schemas/example_full.yml
@@ -34,7 +34,46 @@ csv: # How to parse file before validation
 columns:
   - name: General available options # Can be optional if csv\header: false. If set, then header must contain this value
     required: true                  # If true, then column must be present in the file
+    rules:
+      is_ip6: true
+      dateperiod_: true
+      dateinterval_: true
+      bic: true
+      iban: true
+      card_number: true
+      country_code: true
+      currency_code: true
+      is_positive: true
+      is_negative: true
+      is_zero: true
+      is_even: true
+      is_odd: true
+      is_prime: true
+      is_time: true
+      is_timezone: true
+      is_timezone_offset: true
     aggregate_rules:
+      sum_: true
+      avg_: true
+      median_: true
+      mode_: true
+      range_: true
+      variance_: true
+      stddev_: true
+      percentile_: true
+      quantile_: true
+      count_: true
+      count_distinct_: true
+      count_empty_: true
+      count_not_empty_: true
+      count_null_: true
+      count_not_null_: true
+      count_zero_: true
+      count_positive_: true
+      count_negative_: true
+      count_even_: true
+      count_odd_: true
+      count_prime_: true
       sorted: asc                   # asc, desc, none
       sorted_flag: SORT_NATURAL     # See sort flags: https://www.php.net/manual/en/function.sort.php
       count_min: 1