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 specification may refer to a type of technical standard (the main topic of this page). Using the word specification without additional information to what kind of specification you refer to is confusing and considered bad practice within systems engineering.A Requirement specification is a set of documented requirements to be satisfied by a material, design, product, or service. data sheet is not a technical specification as described in this article. A . In-service  or  Maintained as  specification, specifies the conditions of a system or object after years of operation, including the effects of wear and maintenance (configuration changes).