diff --git a/sh/main.sh b/sh/main.sh
index e91efbf..cf5f767 100644
--- a/sh/main.sh
+++ b/sh/main.sh
@@ -1,4 +1,6 @@
-# constants
+# ╭───────────╮
+# │ constants │
+# ╰───────────╯
 
 SH_MAIN_NAME="main.sh"
 SH_NAME="sh"
@@ -7,12 +9,16 @@ SH_ROOT="/etc/${SH_NAME}"
 
 SH_MAIN="${SH_ROOT}/${SH_MAIN_NAME}"
 
-# variables
+# ╭───────────╮
+# │ variables │
+# ╰───────────╯
 
 SH_SHELL="$(cat "/proc/${$}/comm")"
 SH_USER="${HOME}/${SH_NAME}"
 
-# private
+# ╭─────────╮
+# │ private │
+# ╰─────────╯
 
 _sh_ifs_new() {
 	SH_IFS="${IFS}"
@@ -35,7 +41,9 @@ _sh_main_log() {
 	fi
 }
 
-# public
+# ╭────────╮
+# │ public │
+# ╰────────╯
 
 # find directory’s files by extension
 sh_find_extension() {
@@ -109,7 +117,9 @@ sh_source_directory() {
 	_sh_ifs_pop
 }
 
-# main
+# ╭──────╮
+# │ main │
+# ╰──────╯
 
 # run initial steps
 sh_main() {