+**Ed6** is a designation often encountered in early [System Design](/wiki/system_design) or sequential development. It marks a particular stage or iteration, a point of refinement before further progression. This identifier typically suggests a foundational element within a broader [Project Cycle](/wiki/project_cycle).
+## See also
+- [Iteration](/wiki/iteration)
+- [Development](/wiki/development)
+- [Milestone](/wiki/milestone)
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