diff --git a/README.md b/README.md
index 1f6df86..6b5b790 100644
--- a/README.md
+++ b/README.md
@@ -75,6 +75,7 @@ will create the symbolic link for each script in the \<path> directory.
 ## Development tools
 
 - [doctools2man](doctools2man) converts doctool to man pages.
+- [how](how) shows dev cheat sheets using [cheat.sh](https://cheat.sh).
 - [robodoc2html](robodoc2html) converts a documentation in the robodoc format into html.
 - [utable](utable) shows a Unicode table.
 
diff --git a/how b/how
new file mode 100755
index 0000000..ab84d33
--- /dev/null
+++ b/how
@@ -0,0 +1,35 @@
+#!/bin/bash
+
+#Создан:  вт 03 дек 2019 11:14:23
+#Изменён: вт 03 дек 2019 21:18:38
+
+BINDIR=${SHELLRC}/bin/
+
+SCRIPT=cheat.sh
+
+check_cheat() {
+	command -V "$SCRIPT" >/dev/null 2>&1
+}
+
+install_cheat() {
+	curl -sq https://cht.sh/:cht.sh > "${BINDIR}/${SCRIPT}"
+
+	chmod +x "${BINDIR}/${SCRIPT}"
+
+	echo "[INFO] cheat.sh has been installed to ${BINDIR}/${SCRIPT}."
+}
+
+tip() {
+	if [[ $1 == @* ]]; then
+		CHTSH_QUERY_OPTIONS="style=borland" cheat.sh --shell "${1/@/}"
+	elif [[ $1 == %* ]]; then
+		echo stealth Q | CHTSH_QUERY_OPTIONS="style=borland" cheat.sh --shell "${1/\%/}"
+	else
+		CHTSH_QUERY_OPTIONS="style=borland" cheat.sh "$@" | less -R
+	fi
+}
+
+check_cheat || install_cheat
+
+tip "$@"
+