WPILib Documentation
Thanks in large part to a community effort, the control system software documentation (including WPILib) has moved from ScreenSteps to Read The Docs, and can now be found at https://docs.wpilib.org/ (if you have trouble accessing this location, https://frcdocs.wpi.edu/ is an alternate location with the same content).
The readthedocs effort was started by members of the FRC community and continuing as part of the WPILib project to ensure ongoing maintenance and the highest quality and accuracy for teams. Our thanks to the team that did the original development and continues to lead the development going forward.