I U L S Line layouts Published on March 22, 2017 in Pacing of Flow Lines 1 – Unstructured and Pulse LineFull resolution (1008 × 677) I U L S Line layouts Overview of common I lines, U lines, S lines and L lines. This work by Christoph Roser at AllAboutLean.com is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License. Please credit the image as shown below. For digital documents and web pages please do include the links as shown below. Thank you.By Christoph Roser at AllAboutLean.com under the free CC-BY-SA 4.0 license.