This function is used to print the value of a variable ONCE, then exits.
The input can be most any data type. 
Insert this box into data streams to see what the values are.
Use the COND input to control the printing - exits once.

This controls whether to print A or not. Once A is printed, renderer exits.
The default is miTRUE.
Can be connected to one of the Logic boxes to control printing.

This may be a float, point, color, string, integer, boolean, or matrix.
This is the value to be printed. It is also chained to the output.

This is whatever A is.
Use this value to chain on to other boxes.
The OUT value always follows A, regardless of COND.