diff --git a/.gitignore b/.gitignore
index 0141456..5632c66 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,6 +12,7 @@ openssl/**/*.h
 openssl/**/*.c
 *.dll
 *.db
+*.pdf
 
 # Byte-compiled / optimized / DLL files
 __pycache__/
diff --git a/header.tex b/header.tex
new file mode 100644
index 0000000..1074a44
--- /dev/null
+++ b/header.tex
@@ -0,0 +1,16 @@
+13 lines
+351 B
+TeX
+\usepackage{listings}
+\usepackage[scaled=0.9]{DejaVuSansMono}  % or another monospaced font
+\renewcommand{\ttdefault}{pcr}           % 'pcr' = Courier
+\lstset{
+  basicstyle=\ttfamily\small,
+  columns=fullflexible,
+  keepspaces=true,
+  breaklines=true,
+  breakatwhitespace=true,
+  showstringspaces=false,
+  frame=none,
+  backgroundcolor=\color{white}
+}
\ No newline at end of file
diff --git a/scripts/cvt_readme.ps1 b/scripts/cvt_readme.ps1
new file mode 100644
index 0000000..765b9b9
--- /dev/null
+++ b/scripts/cvt_readme.ps1
@@ -0,0 +1,2 @@
+# covert the manual Markdown file to PDF
+pandoc .\README.md -o .\README.pdf -V geometry:"a4paper, margin=2.5cm" -V header-includes="\usepackage[none]{hyphenat}"
\ No newline at end of file