Concordia Middle Laser Checks - Singles. Compatible with ACCPAC Vision 2000, ACCPAC Proseries V 2.5,3.0, 5.0, Checkmark, Great Plains V 5.3-9.0, Best Software MAS 90, MAS 90 for Windows, and Peachtree Windows V 2.0-7.0.... - Concordia Middle Laser Checks - Singles.