diff --git a/assets/mods/basegame/books/btex.xml b/assets/mods/basegame/books/btex.xml
new file mode 100644
index 000000000..484a5b8c2
--- /dev/null
+++ b/assets/mods/basegame/books/btex.xml
@@ -0,0 +1,49 @@
+<btex cover="hardcover" inner="standard" papersize="standard">
+<cover>
+    <title>The Way to Mastery of Lorem Ipsum<br />Or, How To Write and Publish a Book</title>
+    <author>Terran Publishing</author>
+    <edition>Test Edition</edition>
+</cover>
+
+<toc><tableofcontents /></toc>
+
+<manuscript>
+
+    <chapter>What Is a Book</chapter>
+
+    <p>This example book is designed to give you the exampe of the Book Language.</p>
+
+    <section>What Really Is a Book</section>
+
+    <p>A book is a collection of texts printed in a special way that allows them to be read easily, with enumerable pages and insertion of other helpful resources, such as illustrations and hyperlinks.</p>
+
+    <newpage />
+
+    <fullpagebox>
+        <span colour="grey">
+            <p>this page is intentionally left blank</p>
+        </span>
+    </fullpagebox>
+
+    <chapter>Writing Book Using Pen and Papers</chapter>
+
+    <p>If you open a book on a writing table, you will be welcomed with a toolbar used to put other book elements, such as chapters, sections.</p>
+
+    <chapter>Writing Book Using Typewriter</chapter>
+
+    <p>Typewriters can only write single style of font, therefore chapters and sections are not available.</p>
+
+    <chapter>Writing Book using Computer</chapter>
+
+    <p>Writing book using a computer requires a use of the Book Typesetting Engine Extended, or <BTeX /></p>
+
+    <section>Full Control of the Shape</section>
+
+    <p>With <BTeX /> you can fully control how your publishing would look like, from a pile of papers that look like they have been typed out using typewriter, a pile of papers but a fully-featured printouts that have illustrations in it, to a fully-featured hardcover book.</p>
+
+    <p>This style is controlled using the <code>cover</code> attribute on the root tag, with following values: <code>typewriter</code>, <code>printout</code>, <code>hardcover</code></p>
+
+    <p>Typewriter and Printout are considered not bound and readers will only see one page at a time, while Hardcover is considered bound and two pages are presented to the readers.</p>
+
+</manuscript>
+</btex>
diff --git a/assets/mods/basegame/books/examination.btex b/assets/mods/basegame/books/examination.btex
new file mode 100644
index 000000000..26e1e9b4b
--- /dev/null
+++ b/assets/mods/basegame/books/examination.btex
@@ -0,0 +1,60 @@
+\usestyle{examination}
+
+\begin{blocklut}
+\0\{basegame:0}
+\1\{basegame:32}
+\100\{wall@basegame:32}
+\end{blocklut}
+
+
+\begin{examination}
+
+\section{Introduction}
+
+\begin{tiles}{5x4}
+\terr{
+0,1,1,1,0,
+1,0,0,0,1,
+1,0,0,0,1,
+0,1,1,1,0
+}
+\wall{
+0,1,1,1,0,
+1,1,1,1,1,
+1,1,1,1,1,
+0,1,1,1,0
+}
+\end{tiles}
+
+This is the first page of the Examination.
+
+Examination is a way to instruct the player certain gameplay concepts.
+
+The system is popularised by the Minecraft Mod called ``Create'', of which it was called Pondering.
+
+Terrarum borrows the concept and implements it using its own language.
+
+\section{Language}
+
+\begin{tiles}{5x4}
+\terr{
+0,1,1,1,0,
+1,0,1,0,1,
+1,0,1,0,1,
+0,1,1,1,0
+}
+\wall{
+0,1,1,1,0,
+1,1,1,1,1,
+1,1,1,1,1,
+0,1,1,1,0
+}
+\end{tiles}
+
+Examination relies on the script written in \BTeX.
+
+\BTeX\ is a \TeX-inspired language to write texts to be displayed onto the game, one example being a book.
+
+Examination is a special format of the "book" that operates on the same book system.
+
+\end{examination}
diff --git a/assets/mods/basegame/books/examination.xml b/assets/mods/basegame/books/examination.xml
new file mode 100644
index 000000000..71e76202c
--- /dev/null
+++ b/assets/mods/basegame/books/examination.xml
@@ -0,0 +1,57 @@
+<btex def="examination">
+<blocklut>
+    <pair key="0" value="basegame:0" />
+    <pair key="1" value="basegame:32" />
+</blocklut>
+
+<manuscript>
+    <section>Introduction</section>
+
+    <tiles w="5" h="4">
+    <terr>
+        0,1,1,1,0,
+        1,0,0,0,1,
+        1,0,0,0,1,
+        0,1,1,1,0
+    </terr>
+    <wall>
+        0,1,1,1,0,
+        1,1,1,1,1,
+        1,1,1,1,1,
+        0,1,1,1,0
+    </wall>
+    </tiles>
+
+    <p>This is the first page of the Examination.</p>
+
+    <p>Examination is a way to instruct the player certain gameplay concepts.</p>
+
+    <p>The system is popularised by the Minecraft Mod called “Create”, of which it was called Pondering.</p>
+
+    <p>Terrarum borrows the concept and implements it using its own language.</p>
+
+    <section>Language</section>
+
+    <tiles w="5" h="4">
+    <terr>
+        0,1,1,1,0,
+        1,0,1,0,1,
+        1,0,1,0,1,
+        0,1,1,1,0
+    </terr>
+    <wall>
+        0,1,1,1,0,
+        1,1,1,1,1,
+        1,1,1,1,1,
+        0,1,1,1,0
+    </wall>
+    </tiles>
+
+    <p>Examination relies on the script written in <BTeX />.</p>
+
+    <p><BTeX /> is a XML-like markup language to write texts to be displayed onto the game, one example being a book.</p>
+
+    <p>Examination is a special format of the “book” that operates on the same book system.</p>
+
+</manuscript>
+</btex>
diff --git a/src/net/torvald/btex/BTeXDocument.kt b/src/net/torvald/btex/BTeXDocument.kt
new file mode 100644
index 000000000..4fadfcc73
--- /dev/null
+++ b/src/net/torvald/btex/BTeXDocument.kt
@@ -0,0 +1,93 @@
+package net.torvald.terrarum.btex
+
+import com.badlogic.gdx.graphics.Color
+import com.badlogic.gdx.graphics.g2d.BitmapFont
+import com.badlogic.gdx.graphics.g2d.SpriteBatch
+import com.badlogic.gdx.graphics.g2d.TextureRegion
+import net.torvald.terrarum.App
+import net.torvald.terrarum.ui.Toolkit
+
+/**
+ * Created by minjaesong on 2023-10-28.
+ */
+class BTeXDocument {
+    var context = "tome" // tome (cover=hardcover), sheets (cover=typewriter or cover=printout), examination (def=examination)
+    var font = "default" // default or typewriter
+    var inner = "standard"
+    var papersize = "standard"
+
+    var pageWidth = 420
+    var pageHeight = 25 * 24
+
+    companion object {
+        val DEFAULT_PAGE_BACK = Color(0xe1e1d7ff.toInt())
+        val DEFAULT_PAGE_FORE = Color(0x131311ff)
+    }
+
+    private val pages = ArrayList<BTeXPage>()
+
+
+
+    fun addNewPage(back: Color = DEFAULT_PAGE_BACK) {
+        pages.add(BTeXPage(back, pageWidth, pageHeight))
+    }
+
+    fun appendDrawCall(drawCall: BTeXDrawCall) {
+        pages.last().appendDrawCall(drawCall)
+    }
+
+    fun render(batch: SpriteBatch, page: Int, x: Int, y: Int) {
+        pages[page].render(batch, x, y)
+    }
+}
+
+class BTeXPage(
+    val back: Color,
+    val width: Int,
+    val height: Int,
+) {
+    private val drawCalls = ArrayList<BTeXDrawCall>()
+
+    fun appendDrawCall(drawCall: BTeXDrawCall) {
+        drawCalls.add(drawCall)
+    }
+
+    fun render(batch: SpriteBatch, x: Int, y: Int) {
+        batch.color = back
+        Toolkit.fillArea(batch, x, y, width, height)
+        drawCalls.forEach {
+            it.draw(batch, x, y)
+        }
+    }
+}
+
+class BTeXDrawCall(
+    val posX: Int,
+    val posY: Int,
+    val theme: String,
+    val colour: Color,
+    val font: BitmapFont,
+    val text: String? = null,
+    val texture: TextureRegion? = null,
+) {
+
+    fun draw(batch: SpriteBatch, x: Int, y: Int) {
+        val px = (posX + x).toFloat()
+        val py = (posY + y).toFloat()
+
+        if (theme == "code") {
+            // todo draw code background
+        }
+
+        batch.color = colour
+
+        if (text != null && texture == null) {
+            font.draw(batch, text, px, py)
+        }
+        else if (text == null && texture != null) {
+            batch.draw(texture, px, py)
+        }
+        else throw Error("Text and Texture are both non-null")
+    }
+
+}
\ No newline at end of file
diff --git a/src/net/torvald/btex/BTeXParser.kt b/src/net/torvald/btex/BTeXParser.kt
new file mode 100644
index 000000000..a72df9cb3
--- /dev/null
+++ b/src/net/torvald/btex/BTeXParser.kt
@@ -0,0 +1,159 @@
+package net.torvald.btex
+
+import com.badlogic.gdx.files.FileHandle
+import com.badlogic.gdx.graphics.Color
+import net.torvald.terrarum.App
+import net.torvald.terrarum.btex.BTeXDocument
+import net.torvald.terrarum.btex.BTeXDrawCall
+import net.torvald.terrarum.gameitems.ItemID
+import org.xml.sax.Attributes
+import org.xml.sax.helpers.DefaultHandler
+import java.io.*
+import java.util.*
+import javax.xml.parsers.SAXParserFactory
+
+/**
+ * Created by minjaesong on 2023-10-28.
+ */
+object BTeXParser {
+
+    operator fun invoke(file: FileHandle) = invoke(file.file())
+
+    operator fun invoke(file: File): BTeXDocument {
+        val doc = BTeXDocument()
+        val parser = SAXParserFactory.newDefaultInstance().newSAXParser()
+        val stream = FileInputStream(file)
+        parser.parse(stream, BTeXHandler(doc))
+        return doc
+    }
+
+    private class BTeXHandler(val doc: BTeXDocument) : DefaultHandler() {
+        private val DEFAULT_FONTCOL = Color(0x222222ff)
+        private val LINE_HEIGHT = 24
+
+        private var cover = ""
+        private var inner = ""
+        private var papersize = ""
+        private var def = ""
+
+        private var pageWidth = 420
+        private var pageLines = 25
+        private var pageHeight = 25 * LINE_HEIGHT
+
+        private val blockLut = HashMap<String, ItemID>()
+
+        private val tagStack = ArrayList<String>() // index zero should be "btex"
+
+
+        private var spanColour: String? = null
+
+
+        private var typeX = 0
+        private var typeY = 0
+
+        override fun startElement(uri: String, localName: String, qName: String, attributes: Attributes) {
+            val tag = qName; if (tagStack.isEmpty() && tag != "btex") throw BTeXParsingException("Document is not btex")
+            tagStack.add(tag)
+
+            val attribs = HashMap<String, String>().also {
+                it.putAll((0 until attributes.length).map { attributes.getQName(it) to attributes.getValue(it) })
+            }
+
+            val mode = tagStack.getOrNull(1)
+
+            when (tag) {
+                "btex" -> {
+                    if (attribs.containsKey("def"))
+                        def = attribs["def"]!!
+                    else {
+                        cover = attribs["cover"] ?: "printout"
+                        inner = attribs["inner"] ?: "standard"
+                        papersize = attribs["papersize"] ?: "standard"
+
+                        pageWidth = pageWidthMap[papersize]!!
+                        pageLines = pageHeightMap[papersize]!!
+                        pageHeight = pageLines * LINE_HEIGHT
+
+                        doc.pageWidth = pageWidth
+                        doc.pageHeight = pageHeight
+                    }
+                }
+                "pair" -> {
+                    if (tagStack.size == 3 && mode == "blocklut") {
+                        blockLut[attribs["key"]!!] = attribs["value"]!!
+                    }
+                    else {
+                        throw BTeXParsingException("<pair> used outside of <blocklut>")
+                    }
+                }
+                "span" -> {
+                    attribs["span"]?.let {
+                        spanColour = it
+                    }
+                }
+
+            }
+        }
+
+        override fun endElement(uri: String, localName: String, qName: String) {
+            tagStack.removeLast()
+
+            when (qName) {
+                "span" -> {
+                    spanColour = null
+                }
+            }
+        }
+
+        override fun characters(ch: CharArray, start: Int, length: Int) {
+            val str = String(ch.sliceArray(start until start+length)).replace('\n',' ').replace(Regex(" +"), " ").trim()
+            val font = getFont()
+            advanceCursorPre(font.getWidth(str), 0)
+            doc.appendDrawCall(BTeXDrawCall(typeX, typeY, inner, getSpanColour(), font, str))
+            advanceCursorPost(font.getWidth(str), 0)
+        }
+
+        private fun advanceCursorPre(w: Int, h: Int) {
+            if (typeX + w > pageWidth) {
+                typeY += LINE_HEIGHT
+                typeX = 0
+            }
+
+            if (typeY + h > pageHeight) {
+                typeX = 0
+                typeY = 0
+                doc.addNewPage()
+            }
+        }
+
+        private fun advanceCursorPost(w: Int, h: Int) {
+            typeX += w
+            typeY += h
+        }
+
+
+        private fun getFont() = when (cover) {
+            "typewriter" -> TODO()
+            else -> App.fontGame
+        }
+
+        private fun getSpanColour(): Color = spanColourMap.getOrDefault(spanColour, DEFAULT_FONTCOL)
+
+        private val spanColourMap = hashMapOf(
+            "grey" to Color.LIGHT_GRAY
+        )
+
+        private val pageWidthMap = hashMapOf(
+            "standard" to 420
+        )
+        private val pageHeightMap = hashMapOf(
+            "standard" to 25
+        )
+    }
+
+}
+
+
+class BTeXParsingException(s: String) : RuntimeException(s) {
+
+}
diff --git a/src/net/torvald/terrarum/tests/BTeXTest.kt b/src/net/torvald/terrarum/tests/BTeXTest.kt
new file mode 100644
index 000000000..b20061c3d
--- /dev/null
+++ b/src/net/torvald/terrarum/tests/BTeXTest.kt
@@ -0,0 +1,100 @@
+package net.torvald.terrarum.tests
+
+import org.xml.sax.Attributes
+import org.xml.sax.HandlerBase
+import org.xml.sax.helpers.DefaultHandler
+import java.io.ByteArrayInputStream
+import java.io.InputStream
+import javax.xml.parsers.SAXParserFactory
+
+
+/**
+ * Created by minjaesong on 2023-10-28.
+ */
+fun main() {
+    val csiR = "\u001B[31m"
+    val csiG = "\u001B[32m"
+    val csi0 = "\u001B[m"
+
+    val tex = """<btex cover="hardcover" inner="standard" papersize="standard">
+<cover>
+    <title>The Way to Mastery of Lorem Ipsum<br />Or, How To Write and Publish a Book</title>
+    <author>Terran Publishing</author>
+    <edition>Test Edition</edition>
+</cover>
+
+<toc><tableofcontents /></toc>
+
+<manuscript>
+
+    <chapter>What Is a Book</chapter>
+
+    <p>This example book is designed to give you the exampe of the Book Language.</p>
+
+    <section>What Really Is a Book</section>
+
+    <p>A book is a collection of texts printed in a special way that allows them to be read easily, with
+    enumerable pages and insertion of other helpful resources, such as illustrations and hyperlinks.</p>
+
+    <newpage />
+
+    <fullpagebox>
+        <span colour="grey">
+            <p>this page is intentionally left blank</p>
+        </span>
+    </fullpagebox>
+
+    <chapter>Writing Book Using Pen and Papers</chapter>
+
+    <p>If you open a book on a writing table, you will be welcomed with a toolbar used to put other book
+    elements, such as chapters, sections.</p>
+
+    <chapter>Writing Book Using Typewriter</chapter>
+
+    <p>Typewriters can only write single style of font, therefore chapters and sections are not available.</p>
+
+    <chapter>Writing Book using Computer</chapter>
+
+    <p>Writing book using a computer requires a use of the Book Typesetting Engine Extended, or <BTeX /></p>
+
+    <section>Full Control of the Shape</section>
+
+    <p>With <BTeX /> you can fully control how your publishing would look like, from a pile of papers that
+    look like they have been typed out using typewriter, a pile of papers but a fully-featured printouts that
+    have illustrations in it, to a fully-featured hardcover book.</p>
+
+    <p>This style is controlled using the <code>cover</code> attribute on the root tag, with following
+    values: <code>typewriter</code>, <code>printout</code>, <code>hardcover</code></p>
+
+    <p>Typewriter and Printout are considered not bound and readers will only see one page at a time,
+    while Hardcover is considered bound and two pages are presented to the readers.</p>
+
+</manuscript>
+</btex>
+
+
+"""
+
+    val parser = SAXParserFactory.newDefaultInstance().newSAXParser()
+    val stream: InputStream = ByteArrayInputStream(tex.encodeToByteArray())
+    val hb = object : DefaultHandler() {
+        override fun startElement(uri: String, localName: String, qName: String, attributes: Attributes) {
+            println(" $csiG$qName$csi0 ${(0 until attributes.length).map { "${attributes.getQName(it)}=${attributes.getValue(it)}" }}")
+        }
+
+        override fun endElement(uri: String, localName: String, qName: String) {
+            println("$csiG/$qName$csi0")
+        }
+
+        override fun characters(ch: CharArray, start: Int, length: Int) {
+            val str = String(ch.sliceArray(start until start+length)).replace('\n',' ').replace(Regex(" +"), " ").trim()
+            if (str.isNotBlank()) {
+                println("$str|")
+            }
+        }
+
+
+
+    }
+    parser.parse(stream, hb)
+}
\ No newline at end of file