a Work Breakdown Structure (WBS) typically contains a detailed description of all of the work packages.

Question

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the WBS boxes are usually filled with 1 to 5 word descriptions of a work package. The detail is usually contained in the WBS dictionary. Most project managers we've seen go from a WBS-like exercise into creating a task by task project plan. The WBS dictionary contains a description of the work for each package in the WBS.
Key Takeaway: Honestly, the WBS dictionary is typically a lot of work and avoided by project managers like the plague. However, it is incredibly effective for preventing scope creep by providing detail on what each package of work will entail.

A Work Breakdown Structure (WBS) Typically Contains a Detailed Description