diff --git a/.gitignore b/.gitignore
index 418fdb6..8c029f8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,4 +18,3 @@ tmp
 deb
 *.deb
 test-result.txt
-compile-scheme.pdf
diff --git a/Makefile b/Makefile
index a3b54a8..f7ac403 100644
--- a/Makefile
+++ b/Makefile
@@ -18,9 +18,6 @@ all: build-chibi
 README.md: doc/compile-scheme.1
 	printf "<pre>\n$$(MANWIDTH=80 man -l doc/compile-scheme.1)\n</pre>" > README.md
 
-compile-scheme.pdf: doc/compile-scheme.1
-	mandoc -T pdf -l doc/compile-scheme.1 > compile-scheme.pdf
-
 build-chibi:
 	echo "#!/bin/sh" > compile-scheme
 	echo "chibi-scheme -A ${PREFIX}/lib/compile-scheme ${PREFIX}/lib/compile-scheme/compile-scheme.scm \"\$$@\"" >> compile-scheme
@@ -155,5 +152,3 @@ test-r7rs-php-docker:
 
 clean:
 	git clean -X -f
-
-
diff --git a/README.md b/README.md
index e69de29..346aac6 100644
--- a/README.md
+++ b/README.md
@@ -0,0 +1,93 @@
+<pre>
+compile-scheme(1)           General Commands Manual           compile-scheme(1)
+
+NAME
+       compile-scheme - Compiling Scheme programs to executables
+
+SYNOPSIS
+       compile-scheme  {  [-A  path]  [-I  path]  [-o  path] [-t target] input-
+       file{.scm | .sps} | long-option }
+
+DESCRIPTION
+       compile-scheme is a tool to compile R6RS and R7RS Scheme  programs.   It
+       supports most of SRFI-138 but also adds more features.
+
+       The program input-file is compiled into an executable file.  The result‐
+       ing  executable  file  is  written  to file specified by the -o path (if
+       present) or to the file named same as input-file but without the .scm or
+       .sps suffix.  On Windows either .bat or .exe is appended to  the  output
+       name.
+
+   SUPPORT LIST
+       Some  implementations  support  both compiling and interpreting, in that
+       case only the compiler functionality is used and the  implementation  is
+       marked as compiler.
+
+       R6RS Compilers
+              loko
+
+       R6RS Interpreters
+              chezscheme  guile  ikarus  ironscheme mosh racket sagittarius yp‐
+              silon
+
+       R7RS Compilers
+              chicken cyclone loko
+
+       R7RS Interpreters
+              chibi foment gauche guile kawa  larceny  meevax  mit-scheme  mosh
+              racket sagittarius skint stklos tr7 ypsilon
+
+OPTIONS
+       -A  path Append path to the list of directories that are searched in or‐
+       der to locate imported libraries.
+
+       -I path Prepend directory to the list of directories that  are  searched
+       in order to locate imported libraries.
+
+       -o output-file Use the output-file file, instead of the default deducted
+       from input-file, for the executable file produced.
+
+       Multiple instances of the -A, and -I options can be specified.
+
+       -t  {  unix  |  windows | php } Set the compilation target.  This is not
+       needed if you are compiling for the target OS you  are  running.   Cross
+       compilation is only supported in following cases:
+
+              From unix host to php target when chosen implementation is inter‐
+              preter.
+
+              From  unix  host  to windows target when chosen implementation is
+              interpreter.
+
+       --list-r6rs List supported R6RS implementations.
+
+       --list-r7rs List supported R7RS implementations.
+
+       --list-all List all supported implementations.
+
+       --list-targets List all supported compilation targets.
+
+ENVIRONMENT
+       COMPILE_R7RS/COMPILE_SCHEME
+
+              This environment variable must be set. Set it to the name of  the
+              implementation  as  specified  in the support list.  This differs
+              from SRFI-138 as the SRFI excepts a path.
+
+STANDARDS
+       SRFI    138:    Compiling    Scheme     programs     to     executables.
+       https://srfi.schemers.org/srfi-138/srfi-138.html
+
+CAVEATS
+       Differences from SRFI-138
+
+              No support for -D flag.
+
+              Not  all  implementations  support  adding to beginning or end of
+              load path so -I and -A might work the same
+
+              Only supports one input-file.
+
+EXAMPLES
+                                                              compile-scheme(1)
+</pre>
\ No newline at end of file
diff --git a/doc/compile-scheme.1 b/doc/compile-scheme.1
index ed39018..cad7d6e 100644
--- a/doc/compile-scheme.1
+++ b/doc/compile-scheme.1
@@ -2,7 +2,7 @@
 .SH NAME
 compile-scheme \- Compiling Scheme programs to executables
 .SH SYNOPSIS
-\fBcompile-scheme\fR { [\fB-A\fR \fIpath\fR] [\fB-I\fR \fIpath\fR] [\fB-o\fR \fIpath\fR] [\fB-t\fR \fItarget\fR] input-file\fI{.scm | .sps}\fR | \fIlong-options...\fR }
+\fBcompile-scheme\fR { [\fB-A\fR \fIpath\fR] [\fB-I\fR \fIpath\fR] [\fB-o\fR \fIpath\fR] [\fB-t\fR \fItarget\fR] \fIinput-file\fR{\fI.scm\fR | \fI.sps\fR} | \fIlong-option\fR }
 .SH DESCRIPTION
 .P
 \fBcompile-scheme\fR is a tool to compile R6RS and R7RS Scheme programs.
@@ -59,9 +59,13 @@ List all supported implementations.
 List all supported compilation targets.
 .SH ENVIRONMENT
 .P
-\fBCOMPILE_R7RS/COMPILE_SCHEME\fR
+\fBCOMPILE_R7RS\fR
+.P
+\fBCOMPILE_SCHEME\fR
 .IP
-This environment variable \fBmust\fR be set. Set it to the \fBname\fR of the implementation as specified in the support list.
+
+Either of these environment variables \fBmust\fR be set.
+Set either to the \fBname\fR of the implementation as specified in the support list.
 \fBThis differs from SRFI-138\fR as the SRFI excepts a path.
 .SH STANDARDS
 .P