diff --git a/doc/scsh-manual/tty.tex b/doc/scsh-manual/tty.tex
index fba6abe..7c068bb 100644
--- a/doc/scsh-manual/tty.tex
+++ b/doc/scsh-manual/tty.tex
@@ -213,20 +213,22 @@ being copied, so you may mutate it freely.
 \end{desc}
 
 
-\defun{tty-info}{fd/port}{tty-info-record}
+\defun{tty-info}{[fd/port/fname]}{tty-info-record}
 \begin{desc}
-The \var{fd/port} parameter is an integer file descriptor or Scheme I/O port
-opened on a terminal device.
+The \var{fd/port/fname} parameter is an integer file descriptor or 
+Scheme I/O port opened on a terminal device, 
+or a file-name for a terminal device; it defaults to the current input port.
 This procedure returns a \ex{tty-info} record describing the terminal's
 current mode.
 \end{desc}
 
-\defun {set-tty-info/now}  {fd/port info}{no-value}
-\defunx{set-tty-info/drain}{fd/port info}{no-value}
-\defunx{set-tty-info/flush}{fd/port info}{no-value}
+\defun {set-tty-info/now}  {fd/port/fname info}{no-value}
+\defunx{set-tty-info/drain}{fd/port/fname info}{no-value}
+\defunx{set-tty-info/flush}{fd/port/fname info}{no-value}
 \begin{desc}
-The \var{fd/port} parameter is an integer file descriptor or Scheme I/O port
-opened on a terminal device.
+The \var{fd/port/fname} parameter is an integer file descriptor or 
+Scheme I/O port opened on a terminal device, 
+or a file-name for a terminal device.
 The procedure chosen determines when and how the terminal's mode is altered:
 \begin{center}
 \begin{tabular}{|ll|} \hline
@@ -236,13 +238,17 @@ Procedure & Meaning \\ \hline \hline
 \ex{set-tty-info/flush} & Drain output, flush input, then change. \\ \hline
 \end{tabular}
 \end{center}
+\oops{If I had defined these with the parameters in the reverse order,
+      I could have made \var{fd/port/fname} optional. Too late now.}
 \end{desc}
 
 \subsection{Other terminal-device procedures}
-\defun{send-tty-break}{fd/port [duration]}{no-value}
+\defun{send-tty-break}{[fd/port/fname duration]}{no-value}
 \begin{desc}
-Send a break signal on the terminal associated with file descriptor
-or Scheme I/O port \var{fd/port}.
+The \var{fd/port/fname} parameter is an integer file descriptor or 
+Scheme I/O port opened on a terminal device, 
+or a file-name for a terminal device; it defaults to the current output port.
+Send a break signal to the designated terminal.
 A break signal is a sequence of continuous zeros on the terminal's transmission
 line.
 
@@ -253,29 +259,44 @@ other values determine a period in a manner that will depend upon local
 community standards.
 \end{desc}
 
-\defun{drain-tty}{fd/port}{no-value}
+\defun{drain-tty}{[fd/port/fname]}{no-value}
 \begin{desc}
+The \var{fd/port/fname} parameter is an integer file descriptor or 
+Scheme I/O port opened on a terminal device, 
+or a file-name for a terminal device; it defaults to the current output port.
+
 This procedure waits until all the output written to the
 terminal device has been transmitted to the device.
-If \var{fd/port} is an output port with buffered I/O
+If \var{fd/port/fname} is an output port with buffered I/O
 enabled, then the port's buffered characters are flushed before
 waiting for the device to drain.
 \end{desc}
 
-\defun {flush-tty/input} {fd/port}{no-value}
-\defunx{flush-tty/output}{fd/port}{no-value}
-\defunx{flush-tty/both}  {fd/port}{no-value}
+\defun {flush-tty/input} {[fd/port/fname]}{no-value}
+\defunx{flush-tty/output}{[fd/port/fname]}{no-value}
+\defunx{flush-tty/both}  {[fd/port/fname]}{no-value}
 \begin{desc}
+The \var{fd/port/fname} parameter is an integer file descriptor or 
+Scheme I/O port opened on a terminal device, 
+or a file-name for a terminal device; it defaults to the current input
+port (\ex{flush-tty/input} and \ex{flush-tty/both}),
+or output port (\ex{flush-tty/output}).
+
 These procedures discard the unread input chars or unwritten
 output chars in the tty's kernel buffers. 
 \end{desc}
 
-\defun {start-tty-output}{fd/port} {no-value}
-\defunx{stop-tty-output} {fd/port} {no-value}
-\defunx{start-tty-input} {fd/port} {no-value}
-\defunx{stop-tty-input}  {fd/port} {no-value}
+\defun {start-tty-output}{[fd/port/fname]} {no-value}
+\defunx{stop-tty-output} {[fd/port/fname]} {no-value}
+\defunx{start-tty-input} {[fd/port/fname]} {no-value}
+\defunx{stop-tty-input}  {[fd/port/fname]} {no-value}
 \begin{desc}
 These procedures can be used to control a terminal's input and output flow.
+The \var{fd/port/fname} parameter is an integer file descriptor or 
+Scheme I/O port opened on a terminal device, 
+or a file-name for a terminal device; it defaults to the current input
+or output port.
+
 The \ex{stop-tty-output} and \ex{start-tty-output} procedures suspend
 and resume output from a terminal device.
 The \ex{stop-tty-input} and \ex{start-tty-input} procedures transmit
@@ -283,6 +304,7 @@ the special STOP and START characters to the terminal with the intention
 of stopping and starting terminal input flow.
 \end{desc}
 
+% --- Obsolete ---
 % \defun {encode-baud-rate}{speed}{code}
 % \defunx{decode-baud-rate}{code}{speed}
 % \begin{desc}
@@ -357,8 +379,8 @@ after forking.
 \end{desc}
 
 
-\defun {tty-process-group}{fd/port}{\integer}
-\defunx{set-tty-process-group}{fd/port pgrp}{\undefined}
+\defun {tty-process-group}{fd/port/fname}{\integer}
+\defunx{set-tty-process-group}{fd/port/fname pgrp}{\undefined}
 \begin{desc}
 This pair of procedures gets and sets the process group of a given
 terminal.