diff --git a/internal/cmd/home/home.go b/internal/cmd/home/home.go
index a4bec81..bde6112 100644
--- a/internal/cmd/home/home.go
+++ b/internal/cmd/home/home.go
@@ -59,9 +59,10 @@ func NewApp(logger *log.Logger, config *domain.Config) (*App, error) {
 	entrier := pageucase.NewEntryUseCase(entries, resources)
 	serverer := servercase.NewServerUseCase(sites)
 	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		// INFO(toby3d): any static file is public and unprotected by design, so it's safe to search it
-		// first before deep down to any page or it's resource which might be secured by middleware or
-		// something else.
+		// NOTE(toby3d): any static file is public and unprotected by
+		// design, so it's safe to search it first before deep down to
+		// any page or it's resource which might be protected by
+		// middleware or something else.
 		if static, err := staticer.Do(r.Context(), strings.TrimPrefix(r.URL.Path, "/")); err == nil {
 			http.ServeContent(w, r, static.Name(), static.ModTime(), static)
 
@@ -70,6 +71,8 @@ func NewApp(logger *log.Logger, config *domain.Config) (*App, error) {
 
 		lang := domain.LanguageUnd
 
+		// NOTE(toby3d): read $HOME_CONTENT_DIR/index.md as a source of
+		// truth and global settings for any child entry.
 		s, err := siter.Do(r.Context(), lang)
 		if err != nil {
 			http.Error(w, err.Error(), http.StatusInternalServerError)
@@ -78,8 +81,13 @@ func NewApp(logger *log.Logger, config *domain.Config) (*App, error) {
 		}
 
 		if s.IsMultiLingual() {
+			// NOTE(toby3d): $HOME_CONTENT_DIR contains at least two
+			// index.md with different language codes.
 			head, tail := urlutil.ShiftPath(r.URL.Path)
 			if head == "" {
+				// NOTE(toby3d): client request just '/', try to
+				// understand which language subdirectory is
+				// need to redirect.
 				supported := make([]language.Tag, len(s.Languages))
 				for i := range s.Languages {
 					supported[i] = language.Make(s.Languages[i].Lang())
@@ -104,17 +112,24 @@ func NewApp(logger *log.Logger, config *domain.Config) (*App, error) {
 				return
 			}
 
+			// NOTE(toby3d): client request '/:something/...', try
+			// to understand which language code in subdir is
+			// requested.
 			if lang = domain.NewLanguage(head); lang != domain.LanguageUnd {
 				r.URL.Path = tail
 			}
+
+			// NOTE(toby3d): get localized site config for requested
+			// subdir if exists.
+			if s, err = siter.Do(r.Context(), lang); err != nil {
+				http.Error(w, err.Error(), http.StatusInternalServerError)
+
+				return
+			}
 		}
 
-		if s, err = siter.Do(r.Context(), lang); err != nil {
-			http.Error(w, err.Error(), http.StatusInternalServerError)
-
-			return
-		}
-
+		// NOTE(toby3d): search entry for requested URL and language
+		// code in subdir.
 		e, err := entrier.Do(r.Context(), lang, r.URL.Path)
 		if err != nil {
 			if !errors.Is(err, entry.ErrNotExist) {
@@ -123,6 +138,8 @@ func NewApp(logger *log.Logger, config *domain.Config) (*App, error) {
 				return
 			}
 
+			// NOTE(toby3d): maybe it is not a entry, but is't
+			// resource?
 			res, err := resourcer.Do(r.Context(), r.URL.Path)
 			if err != nil {
 				if errors.Is(err, fs.ErrNotExist) {
@@ -158,6 +175,8 @@ func NewApp(logger *log.Logger, config *domain.Config) (*App, error) {
 			return
 		}
 
+		// NOTE(toby3d): wrap founded entry into theme template and
+		// answer to client.
 		contentLanguage := make([]string, len(e.Translations))
 		for i := range e.Translations {
 			contentLanguage[i] = e.Translations[i].Language.Code()