Slack Posted on 21st December 201525th January 2021 by ThePD (The Project Definition) Slack refers to the Float. Related Definitions in the Project: The Project Schedule Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window) Related Posted in Controls and tagged controls, logic, schedule. ThePD (The Project Definition) ThePD has been developing the Preferred Project Definitions based on the actual project execution and operation experiences and knowledge with the Project Language, and sharing with you daily basis.