diff --git a/README.md b/README.md
index 43faaa9..2c542d9 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,11 @@
+[![English](https://img.shields.io/badge/Lang-en-green)][readme-en]
+[![Korean](https://img.shields.io/badge/Lang-ko-blue)][readme-ko]
+
+[readme-en]: ./
+[readme-ko]: ./docs/README_KR.md
+
+
+
# ๐ก๏ธ KAL
@@ -16,6 +24,8 @@ Try _KAL_ at [KAL Playground][playground].
## ๐ก๏ธ Examples
+### Statements and expressions
+
Variable assignment:
```
์ฌ๊ณผ = 42
@@ -35,6 +45,50 @@ Conditional statement:
}
```
+Defining and calling function:
+```
+๋ํ๊ธฐ = ํจ์(์ซ์1, ์ซ์2) {
+ ๊ฒฐ๊ณผ ์ซ์1 + ์ซ์2
+}
+
+๋ํ๊ธฐ(42, 10)
+```
+which yields `52`.
+
+Closure:
+```
+๋ํ๊ธฐ = ํจ์(์ซ์1) {
+ ๊ฒฐ๊ณผ ํจ์(์ซ์2) {
+ ๊ฒฐ๊ณผ ์ซ์1 + ์ซ์2
+ }
+}
+
+ํ๋๋ํ๊ธฐ = ๋ํ๊ธฐ(1)
+
+ํ๋๋ํ๊ธฐ(42)
+```
+which yields `43`.
+
+
+
+### Types
+
+_Number type_: any floating-point numbers
+```
+์ฌ๊ณผ = 42
+ํฌ๋ = -9.5
+```
+
+_String type_: characters surrounded with single quotes
+```
+์ฌ๊ณผ = '๋ง์์'
+```
+
+_Boolean type_: `์ฐธ`, `๊ฑฐ์ง`
+```
+์ฌ๊ณผ = ์ฐธ
+ํฌ๋ = ๊ฑฐ์ง
+```
## ๐ก๏ธ Manual building and installation
diff --git a/docs/README_KR.md b/docs/README_KR.md
new file mode 100644
index 0000000..6c9f8aa
--- /dev/null
+++ b/docs/README_KR.md
@@ -0,0 +1,128 @@
+[![English](https://img.shields.io/badge/Lang-en-green)][readme-en]
+[![Korean](https://img.shields.io/badge/Lang-ko-blue)][readme-ko]
+
+[readme-en]: ../
+[readme-ko]: ./
+
+
+
+# ๐ก๏ธ KAL
+
+
+
+_KAL: Korean Algorithmic Language_.
+
+ํ๊ตญ์ด๋ฅผ ์ง์ํ๋ ์ธํฐํ๋ฆฌํฐ ์ธ์ด.
+
+_KAL_ ์ธํฐํ๋ฆฌํฐ๋ฅผ ๋ธ๋ผ์ฐ์ ์ ๋ก๋ํ๊ฑฐ๋ ์ง์ ๋น๋ํ๋ ๋ฐฉ๋ฒ์ ์๋๋ฅผ ์ฐธ๊ณ ํ์ธ์.
+
+_KAL_ ์ [ํ๋ ์ด๊ทธ๋ผ์ด๋][playground]์์ ์ฒดํํด๋ณด์ธ์.
+
+[playground]: https://kal-playground.rooi.dev/
+
+
+
+## ๐ก๏ธ ์์
+
+### ๋ฌธ๋ฒ๋ค
+
+๋ณ์ ๋์
ํ๊ธฐ:
+```
+์ฌ๊ณผ = 42
+```
+
+๊ฐ ๋น๊ตํ๊ธฐ:
+```
+์ฌ๊ณผ < 99
+```
+
+์กฐ๊ฑด๋ฌธ ์ฐ๊ธฐ:
+```
+๋ง์ฝ ์ฌ๊ณผ < 99 {
+ ์ฌ๊ณผ = 99
+} ์๋๋ฉด {
+ ์ฌ๊ณผ = 100
+}
+```
+
+ํจ์ ์ฌ์ฉํ๊ธฐ:
+```
+๋ํ๊ธฐ = ํจ์(์ซ์1, ์ซ์2) {
+ ๊ฒฐ๊ณผ ์ซ์1 + ์ซ์2
+}
+
+๋ํ๊ธฐ(42, 10)
+```
+๊ฒฐ๊ณผ๋ `52`์
๋๋ค.
+
+ํด๋ก์ :
+```
+๋ํ๊ธฐ = ํจ์(์ซ์1) {
+ ๊ฒฐ๊ณผ ํจ์(์ซ์2) {
+ ๊ฒฐ๊ณผ ์ซ์1 + ์ซ์2
+ }
+}
+
+ํ๋๋ํ๊ธฐ = ๋ํ๊ธฐ(1)
+
+ํ๋๋ํ๊ธฐ(42)
+```
+๊ฒฐ๊ณผ๋ `42`์
๋๋ค.
+
+
+
+### ํ์
๋ค
+
+_์ซ์ ํ์
_: ์๋ฌด ๋ถ๋์์์ ์ซ์
+```
+์ฌ๊ณผ = 42
+ํฌ๋ = -9.5
+```
+
+_๋ฌธ์์ด ํ์
_: ์์๋ฐ์ดํ๋ก ๋๋ฌ์ผ ๋ฌธ์๋ค
+```
+์ฌ๊ณผ = '๋ง์์'
+```
+
+_๋ถ๋ฆฌ์ธ ํ์
_: `์ฐธ`, `๊ฑฐ์ง`
+```
+์ฌ๊ณผ = ์ฐธ
+ํฌ๋ = ๊ฑฐ์ง
+```
+
+
+## ๐ก๏ธ ๋น๋์ ์ค์น
+
+### ๋น๋ํ๊ธฐ
+
+๋น๋ ๊ณผ์ ์ [Node.js][node]๋ฅผ ๊ธฐ๋ฐ์ผ๋ก ํฉ๋๋ค.
+
+_KAL_ ์ธํฐํ๋ฆฌํฐ๋ฅผ ๋ค์ ์ปค๋งจ๋๋ก [`pnpm`]์ ์ด์ฉํด ๋น๋ํฉ๋๋ค.
+
+```
+pnpm install && pnpm build && pnpm bundle`
+```
+
+
+๊ฒฐ๊ณผ๋ `/bundle/index.js` ๋๋ ํ ๋ฆฌ์ ์์นํฉ๋๋ค.
+
+[pnpm]: https://pnpm.io/
+[node]: https://nodejs.org/
+
+
+
+### ๋ธ๋ผ์ฐ์ ์์ ์ฌ์ฉํ๊ธฐ
+
+๋น๋ํ ํ์ผ `index.js`๋ฅผ ์ํ๋ ๋๋ ํ ๋ฆฌ์ ๋๊ณ , ๋ค์๊ณผ ๊ฐ์ด HTML ์์์ ๋ก๋ํฉ๋๋ค.
+
+```HTML
+
+```
+
+์ดํ, _KAL_ ์ฝ๋๋ ๋ค์๊ณผ ๊ฐ์ด `kal.execute(code-to-execute)`๋ก ์คํํฉ๋๋ค.
+
+```HTML
+
+```