This article is part of the Getting Started series

Boolean variables are variables that can only contain two values: TRUE or FALSE. These variables are used for answering questions whose answer is yes or no.

var x:boolean;
x:=0<5; {is 0 less than 5? yes, it's TRUE}
x:=6=7; {is 6 equal to 7? no, it's FALSE}

See Script:Is prime for an example.

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