 );
 const char* pageTop = pageTopStr.c_str();
 const char* pageTop2 = "</title>\n"
+  "<meta charset=\"utf-8\">"
   "<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">"
   "<style>body{background:#FFF;color: #000;font-family: sans-serif;}</style>"
   "</head><body>\n";

  "<h2>Control</h2>\n"
  "<p><ul>\n"
  "<li><a href='/wifi'>Join a wifi network</a></li>\n"
  "<li><a href='/wifistatus'>Wifi status</a></li>\n"
  "<li><a href='/serverconf'>Configure server location</a></li>\n"
  "<li>\n"
    "<form method='POST' action='actuate'>\n"
    "Operate actuator: "
    "on <input type='radio' name='state' value='on'>\n"
    "off <input type='radio' name='state' value='off' checked>\n"
    "<input type='submit' value='Submit'></form></p>\n"
  "</li>\n"
  "</ul></p>\n"
  "<h2>Monitor</h2>\n"
  "<p><ul>\n"
  "<li><a href='/data'>Sensor data</a></li>\n"
  "</ul></p>\n";
const char* pageFooter =

  f += "<h2>Configure a server</h2><p>\n";

  f += "<form method='POST' action='svrchz'> ";
  f += "<br/>Local server IP address: ";
  f += "<input type='textarea' name='svraddr'><br/><br/> ";
  f += "Sharing on WeGrow.social: ";
  f += "on <input type='radio' name='wegrow' value='on' checked>\n";
  f += "off <input type='radio' name='wegrow' value='off'>\n";
  f += "<input type='submit' value='Submit'></form></p>";

  f += pageFooter;
