diff --git a/docs/source/config_reference/scripting/scripting_functions.rst b/docs/source/config_reference/scripting/scripting_functions.rst
index b462acf0..5ce92108 100644
--- a/docs/source/config_reference/scripting/scripting_functions.rst
+++ b/docs/source/config_reference/scripting/scripting_functions.rst
@@ -17,6 +17,13 @@ array_apply
 
 Apply a lambda function on every element in the Array.
 
+array_apply_fixed
+~~~~~~~~~~~~~~~~~
+``array_apply_fixed(array: Array, fixed_argument: AnyArgument, lambda2_function: LambdaTwo, reverse_args: Optional[Boolean]) -> Array``
+
+Apply a lambda function on every element in the Array, with ``fixed_argument``
+passed as a second argument to every invocation.
+
 array_at
 ~~~~~~~~
 ``array_at(array: Array, idx: Integer) -> AnyArgument``
@@ -42,6 +49,13 @@ array_extend
 
 Combine multiple Arrays into a single Array.
 
+array_first
+~~~~~~~~~~~
+``array_first(array: Array, fallback: AnyArgument) -> AnyArgument``
+
+Returns the first element whose boolean conversion is True. Returns fallback
+if all elements evaluate to False.
+
 array_flatten
 ~~~~~~~~~~~~~
 ``array_flatten(array: Array) -> Array``
@@ -55,6 +69,12 @@ array_index
 Return the index of the value within the Array if it exists. If it does not, it will
 throw an error.
 
+array_overlay
+~~~~~~~~~~~~~
+``array_overlay(array: Array, overlap: Array, only_missing: Optional[Boolean]) -> Array``
+
+Overlaps ``overlap`` onto ``array``. Can optionally only overlay missing indices.
+
 array_product
 ~~~~~~~~~~~~~
 ``array_product(arrays: Array, ...) -> Array``
@@ -119,6 +139,12 @@ gte
 
 ``>=`` operator. Returns True if left >= right. False otherwise.
 
+is_null
+~~~~~~~
+``is_null(value: AnyArgument) -> Boolean``
+
+Returns True if a value is null (i.e. an empty string). False otherwise.
+
 lt
 ~~
 ``lt(left: AnyArgument, right: AnyArgument) -> Boolean``
@@ -191,6 +217,27 @@ assert
 Explicitly throw an error with the provided assert message if ``value`` evaluates to False.
 If it evaluates to True, it will return ``value``.
 
+assert_eq
+~~~~~~~~~
+``assert_eq(value: ReturnableArgument, equals: AnyArgument, assert_message: String) -> ReturnableArgument``
+
+Explicitly throw an error with the provided assert message if ``value`` does not equal
+``equals``. If they do equal, then return ``value``.
+
+assert_ne
+~~~~~~~~~
+``assert_ne(value: ReturnableArgument, equals: AnyArgument, assert_message: String) -> ReturnableArgument``
+
+Explicitly throw an error with the provided assert message if ``value`` equals
+``equals``. If they do equal, then return ``value``.
+
+assert_then
+~~~~~~~~~~~
+``assert_then(value: AnyArgument, ret: ReturnableArgument, assert_message: String) -> ReturnableArgument``
+
+Explicitly throw an error with the provided assert message if ``value`` evaluates to False.
+If it evaluates to True, it will return ``ret``.
+
 throw
 ~~~~~
 ``throw(error_message: String) -> AnyArgument``
@@ -321,6 +368,12 @@ sub
 Regex Functions
 ---------------
 
+regex_capture_groups
+~~~~~~~~~~~~~~~~~~~~
+``regex_capture_groups(regex: String) -> Integer``
+
+Returns number of capture groups in regex
+
 regex_fullmatch
 ~~~~~~~~~~~~~~~
 ``regex_fullmatch(regex: String, string: String) -> Array``
@@ -360,6 +413,12 @@ concat
 
 Concatenate multiple Strings into a single String.
 
+contains
+~~~~~~~~
+``contains(string: String, contains: String) -> Boolean``
+
+Returns True if ``contains`` is in ``string``. False otherwise.
+
 lower
 ~~~~~
 ``lower(string: String) -> String``
diff --git a/tests/unit/docgen/test_docgen.py b/tests/unit/docgen/test_docgen.py
index e6601702..8b2477c4 100644
--- a/tests/unit/docgen/test_docgen.py
+++ b/tests/unit/docgen/test_docgen.py
@@ -1,11 +1,22 @@
+from typing import Type
+
+from tools.docgen.docgen import DocGen
 from tools.docgen.entry_variables import EntryVariableDocGen
+from tools.docgen.scripting_functions import ScriptingFunctionsDocGen
 from ytdl_sub.utils.file_handler import get_file_md5_hash
 from ytdl_sub.utils.file_handler import get_md5_hash
 
 
+def _test_doc_gen(doc_gen: Type[DocGen]) -> None:
+    expected_md5_hash = get_md5_hash(doc_gen.generate_and_maybe_write_to_file())
+    md5_hash = get_file_md5_hash(doc_gen.LOCATION)
+
+    assert md5_hash == expected_md5_hash
+
+
 class TestDocGen:
     def test_entry_variables_generated(self):
-        md5_hash = get_file_md5_hash(EntryVariableDocGen.LOCATION)
-        expected_md5_hash = get_md5_hash(EntryVariableDocGen.generate_and_maybe_write_to_file())
+        _test_doc_gen(EntryVariableDocGen)
 
-        assert md5_hash == expected_md5_hash
+    def test_scripting_functions_generated(self):
+        _test_doc_gen(ScriptingFunctionsDocGen)
diff --git a/tools/docgen/entry_variables.py b/tools/docgen/entry_variables.py
index 66cdecfa..32bba9ed 100644
--- a/tools/docgen/entry_variables.py
+++ b/tools/docgen/entry_variables.py
@@ -11,27 +11,25 @@ from tools.docgen.utils import section
 from ytdl_sub.entries.script.variable_definitions import VariableDefinitions
 
 
+def _variable_class_to_name(obj: Type[Any]) -> str:
+    assert "VariableDefinitions" in obj.__name__, f"{obj.__name__} doesnt have VariableDefinitions"
+    return (
+        camel_case_to_human(obj.__name__)
+        .replace("Variable Definitions", "Variables")
+        .replace("Ytdl Sub", "Ytdl-Sub")
+    )
+
+
 class EntryVariableDocGen(DocGen):
 
     LOCATION = Path("docs/source/config_reference/scripting/entry_variables.rst")
 
-    @classmethod
-    def _variable_class_to_name(cls, obj: Type[Any]) -> str:
-        assert (
-            "VariableDefinitions" in obj.__name__
-        ), f"{obj.__name__} doesnt have VariableDefinitions"
-        return (
-            camel_case_to_human(obj.__name__)
-            .replace("Variable Definitions", "Variables")
-            .replace("Ytdl Sub", "Ytdl-Sub")
-        )
-
     @classmethod
     def generate(cls) -> str:
         docs = section("Entry Variables", level=0)
 
         parent_objs: Dict[str, Type[Any]] = {
-            cls._variable_class_to_name(obj): obj for obj in VariableDefinitions.__bases__
+            _variable_class_to_name(obj): obj for obj in VariableDefinitions.__bases__
         }
 
         for name in sorted(parent_objs.keys()):
diff --git a/tools/docgen/functions.py b/tools/docgen/scripting_functions.py
similarity index 59%
rename from tools/docgen/functions.py
rename to tools/docgen/scripting_functions.py
index 39cb152b..751085f4 100644
--- a/tools/docgen/functions.py
+++ b/tools/docgen/scripting_functions.py
@@ -1,13 +1,14 @@
 import inspect
+from pathlib import Path
 from typing import Any
 from typing import Dict
 from typing import Optional
 from typing import Type
 
+from tools.docgen.docgen import DocGen
 from tools.docgen.utils import camel_case_to_human
 from tools.docgen.utils import section
 from tools.docgen.utils import static_methods
-from tools.docgen.utils import to_out_dir
 from ytdl_sub.entries.script.custom_functions import CustomFunctions
 from ytdl_sub.script.functions import Functions
 from ytdl_sub.script.utils.type_checking import FunctionSpec
@@ -51,27 +52,29 @@ def get_function_docstring(
     return docs
 
 
-def generate_function_docs() -> str:
-    docs = section("Scripting Functions", level=0)
+class ScriptingFunctionsDocGen(DocGen):
 
-    parent_objs: Dict[str, Type[Any]] = {
-        function_class_to_name(obj): obj for obj in Functions.__bases__
-    }
-    parent_objs["Ytdl-Sub Functions"] = CustomFunctions
+    LOCATION = Path("docs/source/config_reference/scripting/scripting_functions.rst")
 
-    for name in sorted(parent_objs.keys()):
-        docs += section(name, level=1)
+    @classmethod
+    def generate(cls) -> str:
+        docs = section("Scripting Functions", level=0)
 
-        for function_name in static_methods(parent_objs[name]):
-            if display_function_name := maybe_get_function_name(function_name):
-                docs += get_function_docstring(
-                    function_name=function_name,
-                    display_function_name=display_function_name,
-                    function=getattr(parent_objs[name], function_name),
-                    level=2,
-                )
+        parent_objs: Dict[str, Type[Any]] = {
+            function_class_to_name(obj): obj for obj in Functions.__bases__
+        }
+        parent_objs["Ytdl-Sub Functions"] = CustomFunctions
 
-    return docs
+        for name in sorted(parent_objs.keys()):
+            docs += section(name, level=1)
 
+            for function_name in static_methods(parent_objs[name]):
+                if display_function_name := maybe_get_function_name(function_name):
+                    docs += get_function_docstring(
+                        function_name=function_name,
+                        display_function_name=display_function_name,
+                        function=getattr(parent_objs[name], function_name),
+                        level=2,
+                    )
 
-to_out_dir(name="scripting_functions.rst", docs=generate_function_docs())
+        return docs