From Funduc Software:
FSConfig - Replace Studio Configuration Utility is a freeware configuration file editor for use with our Replace Studio Pro and Replace Studio Business Edition utilities. FSConfig is used to more easily specify several program settings used by the programs. The font face and size used by the program main window. File name suffix treated by the program as a zip or archive file. The default setting is *.zip;*.jar;*.xlsx;*.docx;*.pptx.