diff --git a/CMakeLists.txt b/CMakeLists.txt
index fc3a00b..a1cf353 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,4 +16,6 @@ include_directories(src/headers/conventions/implementations)
 include_directories(src/headers/parser/platform_headers)
 include_directories(src/headers/parser/parsing_traits)
 
-add_executable(test src/main.cpp)
\ No newline at end of file
+file(GLOB_RECURSE SRC_FILES "src/source/*.cpp" "src/source/**/*.cpp" "src/source/**/**/*.cpp")
+
+add_executable(test src/main.cpp ${SRC_FILES})
\ No newline at end of file
diff --git a/src/headers/conventions/base_convention.hpp b/src/headers/conventions/base_convention.hpp
index fc7d555..96dc59e 100644
--- a/src/headers/conventions/base_convention.hpp
+++ b/src/headers/conventions/base_convention.hpp
@@ -27,9 +27,8 @@ namespace argument_parser::conventions {
 } // namespace argument_parser::conventions
 
 namespace argument_parser::conventions::helpers {
-	static std::string to_lower(std::string s);
-
-	static std::string to_upper(std::string s);
+	std::string to_lower(std::string s);
+	std::string to_upper(std::string s);
 } // namespace argument_parser::conventions::helpers
 
 #endif
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index a33bd5c..51722d8 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -2,7 +2,6 @@
 #define ALLOW_DASH_FOR_WINDOWS 0
 
 #include <argparse>
-#include <expected>
 #include <fstream>
 #include <iostream>
 #include <parser_v2.hpp>
@@ -10,7 +9,6 @@
 #include <sstream>
 #include <vector>
 
-
 struct Point {
 	int x, y;
 };
@@ -45,6 +43,18 @@ template <> struct argument_parser::parsing_traits::parser_trait<std::vector<int
 	}
 };
 
+template <> struct argument_parser::parsing_traits::parser_trait<std::vector<std::string>> {
+	static std::vector<std::string> parse(const std::string &input) {
+		std::vector<std::string> result;
+		std::stringstream ss{input};
+		std::string item;
+		while (std::getline(ss, item, ',')) {
+			result.push_back(item);
+		}
+		return result;
+	}
+};
+
 const std::initializer_list<argument_parser::conventions::convention const *const> conventions = {
 	&argument_parser::conventions::gnu_argument_convention,
 	&argument_parser::conventions::gnu_equal_argument_convention,
@@ -154,14 +164,17 @@ int v2Examples() {
 	using namespace argument_parser::v2::flags;
 	argument_parser::v2::base_parser parser;
 
-	parser.add_argument<std::string>({{ShortArgument, "e"}, {LongArgument, "echo"}, {Action, echo}});
+	parser.add_argument<std::string>(
+		{{ShortArgument, "e"}, {LongArgument, "echo"}, {Action, echo}, {HelpText, "echoes given variable"}});
 
-	parser.add_argument<Point>({{ShortArgument, "ep"}, {LongArgument, "echo-point"}, {Action, echo_point}});
+	parser.add_argument<Point>(
+		{{ShortArgument, "ep"}, {LongArgument, "echo-point"}, {Action, echo_point}, {HelpText, "echoes given point"}});
 
 	parser.add_argument<std::string>({
 		// stores string for f/file flag
 		{ShortArgument, "f"},
 		{LongArgument, "file"},
+		{HelpText, "File to grep, required only if using grep"},
 		// if no action, falls to store operation with given type.
 	});
 
@@ -169,10 +182,12 @@ int v2Examples() {
 		// stores string for g/grep flag
 		{ShortArgument, "g"},
 		{LongArgument, "grep"},
+		{HelpText, "Grep pattern, required only if using file"},
 		// same as 'file' flag
 	});
 
-	parser.add_argument<std::string>({{ShortArgument, "c"}, {LongArgument, "cat"}, {Action, cat}});
+	parser.add_argument<std::string>(
+		{{ShortArgument, "c"}, {LongArgument, "cat"}, {Action, cat}, {HelpText, "Prints the content of the file"}});
 
 	parser.add_argument<Point>({
 		// { ShortArgument, "sp" }, // now if ShortArgument or LongArgument is missing, it will use it for the other.
diff --git a/src/source/conventions/base_convention.cpp b/src/source/conventions/base_convention.cpp
index debbfda..b8e483d 100644
--- a/src/source/conventions/base_convention.cpp
+++ b/src/source/conventions/base_convention.cpp
@@ -2,12 +2,12 @@
 #include <algorithm>
 
 namespace argument_parser::conventions::helpers {
-	static std::string to_lower(std::string s) {
+	std::string to_lower(std::string s) {
 		std::transform(s.begin(), s.end(), s.begin(), [](unsigned char c) { return std::tolower(c); });
 		return s;
 	}
 
-	static std::string to_upper(std::string s) {
+	std::string to_upper(std::string s) {
 		std::transform(s.begin(), s.end(), s.begin(), [](unsigned char c) { return std::toupper(c); });
 		return s;
 	}
diff --git a/src/source/parser/argument_parser.cpp b/src/source/parser/argument_parser.cpp
index dcbbf61..c4eaa73 100644
--- a/src/source/parser/argument_parser.cpp
+++ b/src/source/parser/argument_parser.cpp
@@ -27,6 +27,10 @@ namespace argument_parser {
 		return *this;
 	}
 
+	bool argument::expects_parameter() const {
+		return action->expects_parameter();
+	}
+
 	bool argument::is_required() const {
 		return required;
 	}
@@ -181,13 +185,13 @@ namespace argument_parser {
 		std::initializer_list<conventions::convention const *const> convention_types) {
 		std::vector<std::pair<std::string, std::string>> required_args;
 		for (auto const &[key, arg] : argument_map) {
-			if (arg.is_required() and not arg.is_invoked()) {
+			if (arg.is_required() && !arg.is_invoked()) {
 				required_args.emplace_back<std::pair<std::string, std::string>>(
 					{reverse_short_arguments[key], reverse_long_arguments[key]});
 			}
 		}
 
-		if (not required_args.empty()) {
+		if (!required_args.empty()) {
 			std::cerr << "These arguments were expected but not provided: ";
 			for (auto const &[s, l] : required_args) {
 				std::cerr << "[-" << s << ", --" << l << "] ";