ANSI sizes F and above define various standard “roll” sizes. I’ve never had a need for roll format, but I’ve wondered what the ISO equivalent was. Wikipedia say

ANSI sizes F and above define various standard “roll” sizes. I’ve never had a need for roll format, but I’ve wondered what the ISO equivalent was. Wikipedia says these were used for full-scale layouts of aircraft parts, automotive parts, wiring harnesses, etc, and in some visual art fields.