diff --git a/A4.2col.tex b/A4.2col.tex
new file mode 100644
index 0000000..25067af
--- /dev/null
+++ b/A4.2col.tex
@@ -0,0 +1,55 @@
+%% 19monitor.tex
+%% Introduction to Network UPS Tools (NUT)
+%% Configuration Examples, formatted for ISO A4 paper,
+%% to be read on a landscape 19" monitor
+
+%% This program is free software; you can redistribute it and/or
+%% modify it under the terms of the GNU General Public License
+%% as published by the Free Software Foundation; either version 2
+%% of the License, or (at your option) any later version.
+
+%% This program is distributed in the hope that it will be useful,
+%% but WITHOUT ANY WARRANTY; without even the implied warranty of
+%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+%% GNU General Public License for more details.
+
+%% You should have received a copy of the GNU General Public License
+%% along with this program; if not, write to the Free Software
+%% Foundation, Inc., 59 Temple Place - Suite 330, 
+%% Boston, MA  02111-1307, USA.
+
+% Page size
+% A3 paper: 297x420mm
+% A4 paper: 210x297mm => 146.5x246.2mm useful space
+% US paper: 215.9x279.4mm => 152.4x228.6 useful space
+% Landscape A4  See LaTeX Companion p.84, fig 4.1.
+% Monitor size
+% 17 inch 4:3 350x260mm, 16:9 380x210mm
+% 19 inch 4:3 390x290mm, 16:9 420x240mm
+% 21 inch 4:3 430x320mm, 16:9 440x260mm
+% 23 inch 4:3 470x350mm, 16:9 510x290mm
+\setlength{\hoffset}{-25.4mm}           % See the Companion p.86.  +ve axis to the right
+\addtolength{\hoffset}{-4mm}            % Slide page image a little to the left
+\setlength{\voffset}{-25.4mm}           % +ve axis downwards
+\addtolength{\voffset}{-4mm}            % Raise page image just a little more
+
+\setlength{\textwidth}{390mm}
+\setlength{\paperwidth}{\textwidth}
+\setlength{\pdfpagewidth}{\textwidth}
+\addtolength{\textwidth}{-20mm}
+
+\setlength{\textheight}{240mm}
+\setlength{\paperheight}{\textheight}
+\setlength{\pdfpageheight}{\textheight}
+\addtolength{\textheight}{-30mm}
+
+\setlength{\columnsep}{15mm}
+%\setlength{\columnseprule}{1pt}
+\setlength{\topmargin}{3mm}
+\addtolength{\headsep}{-1mm}         % See Companion, p.85
+\addtolength{\footskip}{-1mm}
+
+% The LinePrinter print width 
+\newlength{\LinePrinterwidth}
+\setlength{\LinePrinterwidth}{145.5mm}  % 0.5(\textwidth-\columnsep)-32mm
+
diff --git a/README b/README
index f889586..3b3c739 100644
--- a/README
+++ b/README
@@ -1,6 +1,9 @@
+README 2021-05-20 Roger Price
+
             ConfigExamples
             --------------
-The files in this directory provide for the creation of a PDF
+
+The files in this directory are used by LaTeX to create a PDF
 file containing the NUT Configuration Examples document.
 
 The base document is a LaTeX markup ConfigExamples.tex with two 
@@ -8,12 +11,15 @@ specific style files lineprinter.sty, and wrapfig.sty which although
 featuring in the LaTeX Companion, now seems to be deprecated,
 so I provide a copy.
 
+By default the PDF is created for the A5 page size, more suitable 
+for reading on-screen.
+
 The .fig figures were created using the venerable xfig, and
-exported as .pdf for inclusion in the final document.
+exported as .pdf by xfig for inclusion in the final document.
 
 To build the document:
 
    make clean && make
 
 Latex will be run three times to ensure that all labels are 
-correctly referenced.
+correctly referenced.  The output is in file ConfigExamples.pdf.