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The Builder was a transient subprocess that constructed the system portion of the subprocess tree. It was guided by a descriptor file which described the subprocesses to be constructed, and their location within the tree. Files to be used in the subprocess maps, and capabilities to be placed in their local C-lists were specified by text names. The builder searched a global list of names for each text name supplied. A global C-list contained a capability corresponding to each position in the global name list. This was essentially a linking operation, similar to that provided by a linking loader for user programs in many systems. After constructing the system subprocesses, the Builder destroyed itself and started the appropriate system subprocess.

Paul McJones