diff --git a/.gitignore b/.gitignore
index d128777..f7040da 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,2 @@
-/tpp
-/exe
+/kyra
 Session.vim
diff --git a/build b/build
deleted file mode 100755
index 4c66820..0000000
--- a/build
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/bin/sh
-#
-go build -o ./exe/ ./cmd/tht
-
diff --git a/cmd/kyra/main.go b/cmd/kyra/main.go
new file mode 100644
index 0000000..74ecb0e
--- /dev/null
+++ b/cmd/kyra/main.go
@@ -0,0 +1,10 @@
+package main
+
+import (
+	"surdeus.su/util/kyra"
+	"os"
+)
+
+func main() {
+	kyra.Tool.Run(os.Args[1:])
+}
diff --git a/cmd/tht/main.go b/cmd/tht/main.go
deleted file mode 100644
index 5c2a29f..0000000
--- a/cmd/tht/main.go
+++ /dev/null
@@ -1,10 +0,0 @@
-package main
-
-import (
-	"surdeus.su/util/tht"
-	"os"
-)
-
-func main() {
-	tht.Tool.Run(os.Args[1:])
-}
diff --git a/context.go b/context.go
index 55747c7..1273079 100644
--- a/context.go
+++ b/context.go
@@ -1,7 +1,7 @@
-package tht
+package kyra
 
-import "surdeus.su/core/xgo/xmodules/httpx"
-import "surdeus.su/util/tht/mdx"
+import httpx "surdeus.su/core/xgo/v2/stdlib/http"
+import "surdeus.su/util/kyra/mdx"
 
 // Context key type for internal usage.
 type CKey string
@@ -11,11 +11,13 @@ const (
 )
 
 type ContextValues struct {
-	Request *httpx.Request
-	Global any
-	Markdown *mdx.Markdown
-	IsIndex bool
+	Request     *httpx.Request
+	Global      any
+	Markdown    *mdx.Markdown
+	IsIndex     bool
 	IndexSuffix string
-	Ext string
-	SourcePath string
+	PPExt         string
+	SourcePath  string
+	FPath string
+	FExt string
 }
diff --git a/go.mod b/go.mod
index 403e25d..624eb22 100644
--- a/go.mod
+++ b/go.mod
@@ -1,11 +1,10 @@
-module surdeus.su/util/tht
+module surdeus.su/util/kyra
 
 go 1.22.3
 
 require (
-	github.com/d5/tengo/v2 v2.17.0
 	github.com/gomarkdown/markdown v0.0.0-20240419095408-642f0ee99ae2
-	surdeus.su/core/cli v0.1.2
-	surdeus.su/core/xgo v0.8.0
-	surdeus.su/util/tpp v0.4.0
+	surdeus.su/core/cli v0.5.0
+	surdeus.su/core/xgo/v2 v2.18.0
+	surdeus.su/util/gopp v0.5.0
 )
diff --git a/go.sum b/go.sum
index 50fff03..091b605 100644
--- a/go.sum
+++ b/go.sum
@@ -1,22 +1,8 @@
-github.com/d5/tengo/v2 v2.17.0 h1:BWUN9NoJzw48jZKiYDXDIF3QrIVZRm1uV1gTzeZ2lqM=
-github.com/d5/tengo/v2 v2.17.0/go.mod h1:XRGjEs5I9jYIKTxly6HCF8oiiilk5E/RYXOZ5b0DZC8=
 github.com/gomarkdown/markdown v0.0.0-20240419095408-642f0ee99ae2 h1:yEt5djSYb4iNtmV9iJGVday+i4e9u6Mrn5iP64HH5QM=
 github.com/gomarkdown/markdown v0.0.0-20240419095408-642f0ee99ae2/go.mod h1:JDGcbDT52eL4fju3sZ4TeHGsQwhG9nbDV21aMyhwPoA=
-surdeus.su/core/cli v0.1.2 h1:qPzjawqPyZsO4Z5SaA1u141recVE65yioA83Qs7Jecs=
-surdeus.su/core/cli v0.1.2/go.mod h1:r9JtQz3aEJzpYzMaNUNQHJoYkoWKNPi047qhd5uGlmA=
-surdeus.su/core/xgo v0.5.0 h1:/Rk3scfFkoSb0qjHRlkUNOp9sr/fd7wAvCiT4fBRo+U=
-surdeus.su/core/xgo v0.5.0/go.mod h1:6C/AHbjfvAMvt3TOzLB4eIZ40eU3ahJXtdY+kr4yXoc=
-surdeus.su/core/xgo v0.6.0 h1:r8b2rm7hN35lOScaCuYxMm7bxyESc50UB66J4tGhnk8=
-surdeus.su/core/xgo v0.6.0/go.mod h1:6C/AHbjfvAMvt3TOzLB4eIZ40eU3ahJXtdY+kr4yXoc=
-surdeus.su/core/xgo v0.6.1 h1:ssF7LrTyANmIVIqO6E2TprueNDup11/NWH8dbzue4VQ=
-surdeus.su/core/xgo v0.6.1/go.mod h1:6C/AHbjfvAMvt3TOzLB4eIZ40eU3ahJXtdY+kr4yXoc=
-surdeus.su/core/xgo v0.7.0 h1:2HoiOTQ0JxqThArC6CRV/BPEuWT9CDlOKH0jyMqhAzU=
-surdeus.su/core/xgo v0.7.0/go.mod h1:6C/AHbjfvAMvt3TOzLB4eIZ40eU3ahJXtdY+kr4yXoc=
-surdeus.su/core/xgo v0.8.0 h1:/dPBq01ck3VHLfWUgt0Wk1/vdpTiA1FQN2WoLUdylV0=
-surdeus.su/core/xgo v0.8.0/go.mod h1:6C/AHbjfvAMvt3TOzLB4eIZ40eU3ahJXtdY+kr4yXoc=
-surdeus.su/util/tpp v0.3.2 h1:ebcnEcY+4tgB4a6trs4GBd2CJjrZJaPKh3i5RKQf8/U=
-surdeus.su/util/tpp v0.3.2/go.mod h1:rXOVXwvdc7FxRGK/Smy03AXLQiet4N+2imFesic9Vzw=
-surdeus.su/util/tpp v0.3.3 h1:GEyOlt4M1jE9q9HSPAds9X85qEc/FUpD/M90vlROgLw=
-surdeus.su/util/tpp v0.3.3/go.mod h1:rXOVXwvdc7FxRGK/Smy03AXLQiet4N+2imFesic9Vzw=
-surdeus.su/util/tpp v0.4.0 h1:GKmduh2AHdaTEZZptCH1yFfAcYiSTX8MvXTzIam8HpM=
-surdeus.su/util/tpp v0.4.0/go.mod h1:rXOVXwvdc7FxRGK/Smy03AXLQiet4N+2imFesic9Vzw=
+surdeus.su/core/cli v0.5.0 h1:jYvE0JVDikFT9FhWGV3wIAcMgByziAVxTwsVUwWkeHs=
+surdeus.su/core/cli v0.5.0/go.mod h1:r9JtQz3aEJzpYzMaNUNQHJoYkoWKNPi047qhd5uGlmA=
+surdeus.su/core/xgo/v2 v2.18.0 h1:Ypz2CIiqkfVD9S4Jes5fES9zkcOYppNRvf4Af5D3JXU=
+surdeus.su/core/xgo/v2 v2.18.0/go.mod h1:EBQA07DjGd0bqIGbaNQ2HZHQkilbYacI7fpQen5ivao=
+surdeus.su/util/gopp v0.5.0 h1:a1PmsniSR+8pm0TLx+5x2lkGqCiIgpYJOFKzUzKT3ZM=
+surdeus.su/util/gopp v0.5.0/go.mod h1:2xkmqz5MjzMlpPPsfaAR5uYB934vp+sVKBRs9qp2IiE=
diff --git a/handler.go b/handler.go
index 38d7636..99415c7 100644
--- a/handler.go
+++ b/handler.go
@@ -1,12 +1,12 @@
-package tht
+package kyra
 
 import (
-	//"github.com/d5/tengo/v2"
-	"surdeus.su/util/tht/mdx"
-	//"surdeus.su/core/xgo/xmodules/htmlx"
-	"surdeus.su/core/xgo/xmodules/httpx"
-	"surdeus.su/core/xgo/xmodules"
-	"surdeus.su/util/tpp"
+	"surdeus.su/util/kyra/mdx"
+	httpx "surdeus.su/core/xgo/v2/stdlib/http"
+	"surdeus.su/core/xgo/v2/stdlib"
+	"surdeus.su/util/gopp"
+
+	"bytes"
 	"path/filepath"
 	"net/http"
 	"context"
@@ -28,10 +28,10 @@ type Handler struct {
 	sourcePath string
 	// Preprocessor must be set by user
 	// to be able to bring custom features in.
-	pp *tpp.Preprocessor
-	// Aditional extension. ".tpp" by default.
-	// For example "file.html.tpp" will be
-	// first preprocessed TPP and sent back as simple HTML.
+	pp *gopp.Preprocessor
+	// Aditional extension. ".kr" by default.
+	// For example "file.html.kr" will be
+	// first preprocessed by gopp and sent back as simple HTML.
 	ext string
 
 	// The global map accessable from all the
@@ -46,7 +46,7 @@ type Handler struct {
 // specified preprocessor, source path,
 // preprocessor extension and the global value.
 func NewHandler(
-	pp *tpp.Preprocessor,
+	pp *gopp.Preprocessor,
 	src, ext, index string,
 	global any,
 ) *Handler {
@@ -59,16 +59,16 @@ func NewHandler(
 	return ret
 }
 
-// Returns the default tpp.Preprocessor suitable for
+// Returns the default gopp.Preprocessor suitable for
 // the most needs.
-func DefaultPP(mod string) *tpp.Preprocessor {
-	t := tpp.NewTengo().SetPreCompile(func(
+func DefaultPP(mod string) *gopp.Preprocessor {
+	t := gopp.NewXGo().SetPreCompile(func(
 		ctx context.Context,
-		s *tpp.Script,
+		s *gopp.Script,
 	) {
 
 		s.SetImportDir(mod)
-		modules := xmodules.GetModules()
+		modules := stdlib.GetModuleMap(stdlib.AllModuleNames()...)
 		modules.Add("markdown", mdx.GetModule())
 		s.SetImports(modules)
 		s.EnableFileImport(true)
@@ -79,8 +79,10 @@ func DefaultPP(mod string) *tpp.Preprocessor {
 		s.Add("__markdown__", vals.Markdown)
 		s.Add("__is_index__", vals.IsIndex)
 		s.Add("__index_suffix__", vals.IndexSuffix)
-		s.Add("__tpp_ext__", vals.Ext)
+		s.Add("__pp_ext__", vals.PPExt)
 		s.Add("__source_path__", vals.SourcePath)
+		s.Add("__fext__", vals.FExt)
+		s.Add("__fpath__", vals.FPath)
 
 	}).SetPreCode(func(ctx context.Context) []byte {
 		return []byte(`
@@ -90,10 +92,6 @@ func DefaultPP(mod string) *tpp.Preprocessor {
 				return pp.write_raw(__markdown__(args...))
 			}
 
-			markdown_file := func(file_path){
-				return pp.write_raw(__markdown(__os__.read_file(file_path)))
-			}
-
 			__http__ := immutable({
 				request : __http_request__
 			})
@@ -103,8 +101,10 @@ func DefaultPP(mod string) *tpp.Preprocessor {
 			context.global = __global__
 			context.is_index = __is_index__
 			context.index_suffix = __index_suffix__
-			context.tpp_ext = __tpp_ext__
+			context.pp_ext = __pp_ext__
 			context.source_path = __source_path__
+			context.fext = __fext__
+			context.fpath = __fpath__
 
 			import("./pre")(context)
 		`)
@@ -114,7 +114,7 @@ func DefaultPP(mod string) *tpp.Preprocessor {
 		`)
 	})
 
-	return tpp.New(t)
+	return gopp.New(t)
 }
 
 func (h *Handler) SetMD(md *mdx.Markdown) *Handler {
@@ -164,14 +164,8 @@ func (h *Handler) ServeHTTP(
 		}
 	}
 
-	//process := true
-	fileData, err := io.ReadAll(file)
-	if err != nil {
-		http.NotFound(w, r)
-		return
-	}
-
-
+	fext := filepath.Ext(filePath)
+	fpath := filePath
 	ctx := context.WithValue(
 		r.Context(),
 		KeyValues,
@@ -183,8 +177,10 @@ func (h *Handler) ServeHTTP(
 			Markdown: h.md,
 			IsIndex: isIndex,
 			IndexSuffix: h.indexSuffix,
-			Ext: h.ext,
+			PPExt: h.ext,
 			SourcePath: h.sourcePath,
+			FPath: fpath,
+			FExt: fext,
 		},
 	)
 
@@ -193,22 +189,32 @@ func (h *Handler) ServeHTTP(
 	fileExt := filepath.Ext(filePath)
 	contentType := mime.TypeByExtension(fileExt)
 	w.Header().Set("Content-Type", contentType)
-	processedData := fileData
+
+	var buf bytes.Buffer
+	var reader io.Reader
 	if shouldProcess {
-		_, processedData, err = h.pp.Process(
-			ctx,
-			filePathTpp,
-			fileData,
+		compiled, err := h.pp.Compile(
+			ctx, file,
 		)
 		if err != nil {
-			http.NotFound(w, r)
-			log.Printf(
-				"Error: pp.Process(...): %s\n",
-				err,
-			)
+			log.Printf("gopp.Compile(...): %s\n", err)
+			http.Error(w, err.Error(), 500)
 			return
 		}
+
+		err = h.pp.XGo().RunContext(
+			ctx, compiled,
+			filePath, &buf,
+		)
+		if err != nil {
+			log.Printf("gopp.RunContext(...): %s\n", err)
+			http.Error(w, err.Error(), 500)
+			return
+		}
+		reader = &buf
+	} else {
+		reader = file
 	}
 
-	w.Write(processedData)
+	io.Copy(w, reader)
 }
diff --git a/install b/install
deleted file mode 100755
index e184488..0000000
--- a/install
+++ /dev/null
@@ -1,3 +0,0 @@
-#!/bin/sh
-
-go install ./cmd/tht/
diff --git a/log.go b/log.go
index f347efa..988cf7b 100644
--- a/log.go
+++ b/log.go
@@ -1,4 +1,4 @@
-package tht
+package kyra
 
 import "log"
 import "net/http"
diff --git a/mdx/main.go b/mdx/main.go
index 6e6734c..231c1fd 100644
--- a/mdx/main.go
+++ b/mdx/main.go
@@ -2,16 +2,16 @@ package mdx
 import "github.com/gomarkdown/markdown"
 import "github.com/gomarkdown/markdown/html"
 import "github.com/gomarkdown/markdown/parser"
-import "github.com/d5/tengo/v2"
+import "surdeus.su/core/xgo/v2"
 import "bytes"
 
-func GetModule() tengo.Importable {
-	return &tengo.BuiltinModule{Attrs:map[string]tengo.Object{
-		"new": &tengo.BuiltinFunction{
+func GetModule() xgo.Importable {
+	return &xgo.BuiltinModule{Attrs:map[string]xgo.Object{
+		"new": &xgo.BuiltinFunction{
 			Name: "new",
 			Value: func(
-				args ...tengo.Object,
-			) (tengo.Object, error){
+				args ...xgo.Object,
+			) (xgo.Object, error){
 				return MakeDefaultMarkdown(), nil
 			},
 		},
@@ -19,7 +19,7 @@ func GetModule() tengo.Importable {
 }
 
 type Markdown struct {
-	tengo.ObjectImpl
+	xgo.ObjectImpl
 	MakeParser func() *parser.Parser
 	MakeRenderer func() *html.Renderer
 }
@@ -55,13 +55,13 @@ func (md *Markdown) CanCall() bool {
 }
 
 func (md *Markdown) Call(
-	args ...tengo.Object,
-) (tengo.Object, error) {
+	args ...xgo.Object,
+) (xgo.Object, error) {
 	var b bytes.Buffer
 	for _, arg := range args {
-		str, ok := tengo.ToString(arg)
+		str, ok := xgo.ToString(arg)
 		if !ok {
-			return nil, tengo.ErrInvalidArgumentType{
+			return nil, xgo.ErrInvalidArgumentType{
 				Name: "v",
 				Expected: "stringer",
 				Found: arg.TypeName(),
@@ -75,7 +75,7 @@ func (md *Markdown) Call(
 		return nil, err
 	}
 
-	return tengo.FromInterface(rendered)
+	return xgo.FromInterface(rendered)
 }
 
 func MakeDefaultParser() *parser.Parser {
diff --git a/mod/post.tengo b/mod/post.xgo
similarity index 64%
rename from mod/post.tengo
rename to mod/post.xgo
index c4a439e..8691f07 100644
--- a/mod/post.tengo
+++ b/mod/post.xgo
@@ -1,4 +1,3 @@
-fmt := import("fmt")
 paths := import("paths")
 htmExt := func(c){
 	if c.is_compo {
@@ -14,10 +13,7 @@ exts := {
 }
 
 export func(c){
-	ext := paths.ext(c.pp.filepath)
-	ext = paths.ext(
-		c.pp.filepath[:len(c.pp.filepath) - len(ext)]
-	)
+	ext := c.fext
 
 	cl := exts[ext]
 	if !is_undefined(cl) {
diff --git a/mod/pre.tengo b/mod/pre.xgo
similarity index 72%
rename from mod/pre.tengo
rename to mod/pre.xgo
index b550388..ab410fb 100644
--- a/mod/pre.tengo
+++ b/mod/pre.xgo
@@ -1,6 +1,5 @@
-fmt := import("fmt")
 paths := import("paths")
-html := import("html").new_render()
+html := import("html").Renderer()
 
 htmExt := func(c){
 	if c.is_compo {
@@ -20,6 +19,7 @@ htmExt := func(c){
 	))
 
 	c.pp.print(`<body>`)
+	c.pp.print(html.div().body(c.global.val))
 }
 
 exts := {
@@ -28,11 +28,7 @@ exts := {
 }
 
 export func(c){
-	ext := paths.ext(c.pp.filepath)
-	ext = paths.ext(
-		c.pp.filepath[:len(c.pp.filepath) - len(ext)]
-	)
-
+	ext := c.fext
 	cl := exts[ext]
 	if cl {
 		cl(c)
diff --git a/run-tht b/run-tht
deleted file mode 100755
index 646c7c1..0000000
--- a/run-tht
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/bin/sh
-#
-go build -o ./exe/ ./cmd/tht/ && \
-	./exe/tht
diff --git a/src/check/index.htm.tpp b/src/check/index.htm.kr
similarity index 71%
rename from src/check/index.htm.tpp
rename to src/check/index.htm.kr
index ee4255e..10176f0 100644
--- a/src/check/index.htm.tpp
+++ b/src/check/index.htm.kr
@@ -1,5 +1,5 @@
 {{#
-	html := import("html").new_render()
+	html := import("html").Renderer()
 }}
 {{
 h := html.main().body(
diff --git a/src/index.htm.tpp b/src/index.htm.kr
similarity index 88%
rename from src/index.htm.tpp
rename to src/index.htm.kr
index 2b3e556..c7b799e 100644
--- a/src/index.htm.tpp
+++ b/src/index.htm.kr
@@ -2,7 +2,7 @@
 	context.title = "The example.site main page"
 	
 	fmt := import("fmt")
-	html := import("html").new_render()
+	html := import("html").Renderer()
 }}
 
 {{
@@ -37,3 +37,5 @@
 	}
 }}
 
+<div id="bool">{{pp.print(context.global.val)}}</div>
+
diff --git a/src/req.json.tpp b/src/req.json.kr
similarity index 100%
rename from src/req.json.tpp
rename to src/req.json.kr
diff --git a/tool.go b/tool.go
index 3d6490d..aea56c1 100644
--- a/tool.go
+++ b/tool.go
@@ -1,33 +1,26 @@
-package tht
+package kyra
 
 import (
-
-	"github.com/d5/tengo/v2"
-	"surdeus.su/util/tht/mdx"
+	"surdeus.su/core/xgo/v2"
+	"surdeus.su/util/kyra/mdx"
 	"surdeus.su/core/cli/mtool"
 	"net/http"
 	"log"
 )
 
-
 // Simple PHP-like server implementation.
-var Tool = mtool.T("tht").Func(func(flags *mtool.Flags) {
+var Tool = mtool.T("kyra").Func(func(flags *mtool.Flags) {
 	var (
 		addr, ext, src, mod, index string
-		noLog bool
+		noLog                      bool
 	)
 
 	flags.StringVar(&addr, "addr", ":3000", "address to serve at")
 	flags.StringVar(&mod, "mod", "./mod", "path to store Tengo modules")
 	flags.StringVar(&src, "src", "./src", "directory with source files")
-	flags.StringVar(&ext, "ext", ".tpp", "extension for TPP files")
+	flags.StringVar(&ext, "ext", ".kr", "extension for Kyra files")
 	flags.StringVar(&index, "index", "index.htm", "index file name")
-	flags.BoolVar(
-		&noLog,
-		"no-log",
-		false,
-		"disable logging",
-	)
+	flags.BoolVar(&noLog, "no-log", false, "disable logging")
 
 	flags.Parse()
 
@@ -35,7 +28,7 @@ var Tool = mtool.T("tht").Func(func(flags *mtool.Flags) {
 		After: NewHandler(
 			DefaultPP(mod),
 			src, ext, index,
-			map[string] tengo.Object{},
+			map[string]xgo.Object{},
 		).SetMD(mdx.MakeDefaultMarkdown()),
 	}
 	if !noLog {
@@ -52,4 +45,8 @@ var Tool = mtool.T("tht").Func(func(flags *mtool.Flags) {
 	if err != nil {
 		log.Printf("Error: srv.ListenAndServe(...): %s\n", err)
 	}
-})
+}).Ldesc(`
+	Simple PHP-like server implementation of the Kyra
+	suitable for the most of the needs of websites.
+`)
+