--- a/doc/interpreter/plotimages.m
+++ b/doc/interpreter/plotimages.m
@@ -23,6 +23,7 @@
   if (strcmp (typ, "png"))
     set (0, "defaulttextfontname", "*");
   endif
+
   if (strcmp(typ , "txt"))
     image_as_txt(nm);
   elseif (strcmp (nm, "plot"))
@@ -77,10 +78,14 @@
   image_size = [5.0, 3.5]; # in inches, 16:9 format
   border = 0;              # For postscript use 50/72
   set (0, "defaultfigurepapertype", "<custom>");
+  set (0, "defaultfigurepaperorientation", "landscape");
   set (0, "defaultfigurepapersize", image_size + 2*border);
   set (0, "defaultfigurepaperposition", [border, border, image_size]);
 endfunction
 
+## Use this function before plotting commands and after every call to
+## print since print() resets output to stdout (unfortunately, gnpulot
+## can't pop output as it can the terminal type).
 function hide_output ()
   f = figure (1);
   set (f, "visible", "off");