Web.Config Font Size:
Config File: Web.Config   
Source File: SourceViewer.src   
Source Code Viewer Files: srcview.aspx   SrcCtrl.ascx   srcctrlwin.aspx   style.css   
Hyperlink Examples: Links.txt   
<?xml version="1.0" encoding="UTF-8" ?>

<configuration>

  <configSections>
    <sectionGroup name="system.web">
      <section name="sourceview" type="System.Configuration.NameValueSectionHandler,System,Version=1.0.3300.0,Culture=neutral,PublicKeyToken=b77a5c561934e089" />
    </sectionGroup>
  </configSections>

  <system.web>

    <compilation defaultLanguage="c#" debug="true" /> 
    <customErrors mode="Off" /> 
    <trace enabled="false" requestLimit="10" pageOutput="false" traceMode="SortByTime" localOnly="true" />
    <globalization requestEncoding="utf-8" responseEncoding="utf-8" />
 
    <sourceview>
      // Only files in this directory can be viewed.
      <add key="root" value="c:\Application\Source" /> // edit this line to match your directory
    </sourceview>

  </system.web>

</configuration>