Windows Sinus

Windows Sinus (or Windows SIN) - is a Windows released after Windows Feline, No. 0_0, Bey-o-soft and Ab-O-Soft Windowses, and probably Prettysoft. Created by Microsoft since 1 BTE SIN
== Appearance ==
Windows SIN's screen looks like a black background with gray colored text. Uses Comic Sans MS font.
== Sounds ==
Have a Windows Interface 4.0 Startup sound, and Mookity OS 1.01 Startup sound for Shutdown
File:Windows Interface 4.0 Startup.wav|Startup
File:Mookity OS 1.01 Startup.wav|Shutdown