And

The and operator is a boolean operator which returns <literal:true> only if all arguments are true, else returns <literal:false>.

Its token is named AND.

FDS

See Also: Infix notation

<value:boolean><whitespace>and<whitespace><value:number>

I did this as long as Applejack is 99 and Spike is 12:
...

This executes the next part of code if the variable Applejack is equal to 99 and the variable Spike is equal to 12.

This is equivalent to the following Java code:

while(Applejack==99&Spike==12) { ...