The page you are looking at is being generated dynamically by revIgniter.
If you would like to edit this page you'll find it located at:
system/application/views/welcomeMessage.irev
The corresponding controller for this page is found at:
system/application/controllers/welcome.irev
If you are exploring revIgniter for the very first time, you should start by reading the User Guide.
Nicolas: the folders and files installed at root by revIgniter were:
assets
system
userGuide
index.irev
revIgniter_LICENSE.txt
revIgnitier_NOTICE.txt
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