Every instance of a variable starts with a value. This value may default to invalid, or it may be declared to have a numeric or text value upon creation. Every time an instance of that variable is created, it will begin existence with its default value. A default value is specified by placing a = after the variable name followed by the desired default value.
Persistent variables will only set their default value if there is no .VAL file containing the persistent value.
VTS will also allow treat arithmetic combinations of constants as a single constant. For example, if you specify (2 * 7), this is treated as a single constant with the value of 14. More complex expressions can be specified which include +, -, *, /, %, Sqrt, Sin, Cos, Tan, Log, MakeBuff, and Concat among others. These computed constants may be used to specify default values in a way that makes the derivation of their value clearer to others viewing the code later.