You can find out when most of the Mersch families immigrated to the United States. You can focus your search to immigration records dating from that era. Immigration records can tell you an ancestor's name, ship name, port of departure, port of arrival and destination.
What is a System Requirements Specification (SRS)? A System Requirements Specification (SRS) (also known as a Software Requirements Specification) is a document or set of documentation that describes the features and behavior of a system or software application.
A requirement is a capability that a product must possess to ultimately satisfy a customer need or objective. A requirement tends to be more granular, and is written with the implementation in mind. Feature: A feature is a set of logically related requirements that allows the user to satisfy an objective. A feature tends to be a higher-level objective than a requirement.