diff --git a/Makefile.in b/Makefile.in
index c050343..cdeed3e 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -308,6 +308,7 @@ LTLIBICONV = @LTLIBICONV@
 LTLIBINTL = @LTLIBINTL@
 LTLIBOBJS = @LTLIBOBJS@
 MAKEINFO = @MAKEINFO@
+MAN = @MAN@
 MKDIR_P = @MKDIR_P@
 MSGFMT = @MSGFMT@
 MSGFMT_015 = @MSGFMT_015@
diff --git a/configure b/configure
index e0b1ece..fc02876 100755
--- a/configure
+++ b/configure
@@ -594,6 +594,7 @@ GIT
 OPENSSL
 XDG_OPEN
 BASH
+MAN
 UNZIP
 GPG
 CURL
@@ -6362,6 +6363,53 @@ if test "$UNZIP" = "no" ; then
 $as_echo "$as_me: WARNING: Can not find unzip, genpub support will be disabled." >&2;}
 fi
 
+# Extract the first word of "man", so it can be a program name with args.
+set dummy man; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_MAN+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $MAN in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_MAN="$MAN" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_MAN="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  test -z "$ac_cv_path_MAN" && ac_cv_path_MAN="no"
+  ;;
+esac
+fi
+MAN=$ac_cv_path_MAN
+if test -n "$MAN"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MAN" >&5
+$as_echo "$MAN" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+
+if test "$MAN" = "no" ; then
+   { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Can not find man." >&5
+$as_echo "$as_me: WARNING: Can not find man." >&2;}
+fi
+
 # Extract the first word of "bash", so it can be a program name with args.
 set dummy bash; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
diff --git a/configure.ac b/configure.ac
index fa2a53a..e3c7eb4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -49,6 +49,12 @@ if test "$UNZIP" = "no" ; then
    AC_MSG_WARN([Can not find unzip, genpub support will be disabled.])
 fi
 
+AC_PATH_PROG([MAN],[man],[no])
+
+if test "$MAN" = "no" ; then
+   AC_MSG_WARN([Can not find man.])
+fi
+
 AC_PATH_PROG([BASH],[bash],[no])
 
 if test "$BASH" = "no" ; then
diff --git a/etc/init.lisp b/etc/init.lisp
index e59b70a..e2752ae 100644
--- a/etc/init.lisp
+++ b/etc/init.lisp
@@ -143,6 +143,8 @@
 
 (define-key "C-h a"     #'apropos-help)
 
+(define-key "C-h m"     #'open-manual)
+
 (define-key "!"         #'gemini-search)
 
 (define-key ">"         #'open-gemini-address)
diff --git a/src/config.lisp.in.in b/src/config.lisp.in.in
index 4356376..6dff526 100644
--- a/src/config.lisp.in.in
+++ b/src/config.lisp.in.in
@@ -19,10 +19,18 @@
 
 (alexandria:define-constant +unzip-bin+     "@UNZIP@"    :test #'string=)
 
+(alexandria:define-constant +man-bin+       "@MAN@"    :test #'string=)
+
 (eval-when (:compile-toplevel :load-toplevel :execute)
-  (when (and (not (member :gempub-support *features*))
-             (string/= +unzip-bin+ "no"))
-    (push :gempub-support *features*)))
+
+  (defun allow-features (test-value feature-keyword)
+    (when (and (not (member feature-keyword *features*))
+               (string/= test-value "no"))
+      (push feature-keyword *features*)))
+
+  (allow-features +unzip-bin+ :gempub-support)
+
+  (allow-features +man-bin+   :man-bin))
 
 (defmacro with-return-untranslated ((untranslated) &body body)
   `(handler-bind ((i18n-conditions:no-translation-table-error
diff --git a/src/package.lisp b/src/package.lisp
index 0204f0f..df0c8eb 100644
--- a/src/package.lisp
+++ b/src/package.lisp
@@ -35,6 +35,7 @@
    :+openssl-bin+
    :+xdg-open-bin+
    :+unzip-bin+
+   :+man-bin+
    :_
    :n_))
 
@@ -2500,6 +2501,7 @@
   (:shadowing-import-from :misc :random-elt :shuffle)
   (:export
    :delete-message-status-marked-to-delete
+   :open-manual
    :quit-program
    :clean-close-program
    :notify
diff --git a/src/ui-goodies.lisp b/src/ui-goodies.lisp
index c13685a..dd2b3a3 100644
--- a/src/ui-goodies.lisp
+++ b/src/ui-goodies.lisp
@@ -20,6 +20,21 @@
 (defun boolean-input-accepted-p (user-input)
   (string-equal user-input (_ "y")))
 
+(defun open-manual ()
+  #+man-bin
+  (progn
+    (croatoan:end-screen)
+    (tui:with-notify-errors
+      (os-utils::run-external-program +man-bin+
+                                      (list +program-name+)
+                                      :search t
+                                      :wait   t
+                                      :input  t
+                                      :output t
+                                      :error  t)))
+  #-man-bin
+  (notify (_ "No manpage binary found on this system") :as-error t))
+
 (defun quit-program ()
   "This  is not the right function to quit the program, use
   'clean-close-program'."