Silverlight is a powerful development platform for creating engaging, interactive user experiences for Web, desktop, and mobile applications when online or offline. Silverlight is a free plug-in, powered by the .NET framework and compatible with multiple browsers, devices and operating systems, bringing a new level of interactivity wherever the Web works. Silverlight 4 adds a ton of new features, like webcam, microphone, and printing, to enable you to create incredible applications.
以上短文是由網路上擷取而來。將文章存為一以ASCII編碼的文件，以MATLAB讀取並將大小寫互換，在另存新檔。程式碼：
fid = fopen('Silverlight.txt'); %開啟Silverlight.txt文件檔
fout = fopen('nSilverlight.txt','W'); %另存為nSILVERLIGHT.TXT文件檔
while feof(fid) ==0; %若檔案已讀完,feof=1
str=fgetl(fid); %一列一列讀完,包括換行字元
j=find(str>=65 & str<=90); %找出字元中大寫字元(的編碼)
k=find(str>=97 & str <=122); %找出字元中小寫字元(的編碼)
str(j)=str(j)+32;
str(k)=str(k)-32;
fprintf(fout,'%s\n',str);
end
fclose(fid);
fclose(fout);
結果：
sILVERLIGHT IS A POWERFUL DEVELOPMENT PLATFORM FOR CREATING ENGAGING, INTERACTIVE USER EXPERIENCES FOR wEB, DESKTOP, AND MOBILE APPLICATIONS WHEN ONLINE OR OFFLINE. sILVERLIGHT IS A FREE PLUG-IN, POWERED BY THE .net FRAMEWORK AND COMPATIBLE WITH MULTIPLE BROWSERS, DEVICES AND OPERATING SYSTEMS, BRINGING A NEW LEVEL OF INTERACTIVITY WHEREVER THE wEB WORKS. sILVERLIGHT 4 ADDS A TON OF NEW FEATURES, LIKE WEBCAM, MICROPHONE, AND PRINTING, TO ENABLE YOU TO CREATE INCREDIBLE APPLICATIONS.