How to "Clear the Screen" for Windows Command Processor? (Windows 10)

[Boqsc]

I'm getting unsure why executeShell works on the pause command, 
but cls that is responsible for clearing the text do not.

import std.stdio, std.process;
void main()
{
	writeln("Some text that will appear in cmd");
	executeShell("cls"); // Does not clear the text?
	executeShell("pause"); // Pauses the cmd.exe to keep from 
closing itself.
}