diff --git a/sh/main.sh b/sh/main.sh
index 838b028..09edeae 100755
--- a/sh/main.sh
+++ b/sh/main.sh
@@ -21,18 +21,23 @@ RWX_SELF_COMMAND="_${RWX_SELF_NAME}_cmd_"
 # ╰──────┴───────────╯
 
 RWX_COMMAND_ARGUMENT="${0}"
+# currently running shell name
 RWX_SHELL="$(cat "/proc/${$}/comm")"
 
-RWX_COMMAND_NAME="$(basename "${RWX_COMMAND_ARGUMENT}" |
-	sed "s|^-||")"
+# command name used to run
+RWX_COMMAND_NAME="$(basename "${RWX_COMMAND_ARGUMENT}" | sed "s|^-||")"
 case "${RWX_COMMAND_NAME}" in
 "bash" | "dash" | "sh") unset RWX_COMMAND_NAME ;;
 *) ;;
 esac
+# system root directory of the project
 RWX_ROOT_SYSTEM="/usr/local/lib/${RWX_SELF_NAME}"
+# user root directory of the project
 RWX_SELF_USER="${HOME}/${RWX_SELF_NAME}"
 
+# path to the required parsing awk script
 RWX_AWK="${RWX_ROOT_SYSTEM}/${RWX_MAIN_NAME%.sh}.awk"
+# path to the entrypoint main file of the project
 RWX_MAIN_PATH="${RWX_ROOT_SYSTEM}/${RWX_MAIN_NAME}"
 
 # ╭──────┬──────╮