Member of the support class.
persistent a
persistent a b ... c
Defines variables as persistent. Persistent variables are local to the function in which you use them but retain their original values for future calls. The first time you define a variable as persistent, LabVIEW initializes the variable to an empty matrix.
If you call this function from a MathScript Node, LabVIEW operates with slower run-time performance for the MathScript Node. To optimize the performance of the MathScript Node, remove this function from scripts.