Flowing can be done on paper or on a laptop using a generic spreadsheet program such as
Microsoft Excel. Debaters have utilized more specialized software or integrative programs that work in tandem with
Microsoft Office. These programs have been usually designed by debaters and former debaters for flowing. In collegiate debate, computers may *not* be used in any round, however some high school tournaments and organizations misinform about their use. Those tournaments that follow the
National Forensic League regulations may or may not allow laptops depending on the district. Debaters often prefer to use legal paper to be able to capture the numerous arguments read on each position. Numerous sheets of paper (or tabs in a spreadsheet) are used each round as debaters normally use one sheet for each different type of argument read. Debaters often save flows from previous rounds to keep records of both affirmative cases and strategies used by opponents. ==Flow-filling==