DupBlock usage begins by specifying a default text block and using named variables in positions where you want to insert counter or list data. Variables can be counter-type variables that sequence + 1 from 0 (or from a user-defined starting value) OR a list of input data that is output sequentially as blocks are generated. Formatting for counter-type variables can use some aspects of 'printf' style formatting. The number of iterations performed is determined by the 'Repeat Block' field in the program dialog. Output can be sent to a file or the windows clipboard.