This document is an open response to the NIH Request for Information (RFI): Strategies for NIH Data Management, Sharing, and Citation, Notice Number: NOT-OD-17-015, written by the leaders of the FORCE11 Software Citation Working Group from its inception in mid-2015 through today. This group produced a set of Software Citation Principles and related discussion, which are the basis for this document. Here, we describe research software, summarize the software citation principles, discuss open issues related to software citation, and make recommendations to the NIH.