In computing the term '''core''' is most frequently found in the phrase
'''[https://en.wikipedia.org/wiki/Core_dump%|%core dump]''' , which derives
from [https://en.wikipedia.org/wiki/Magnetic_core_memory%|%magnetic core
memory] .  Around here , '''core'''  usually means [The Tcl Core]  -- the [C]
implementation of Tcl managed by the [Tcl Core Team] .  Accordingly , the term
"core command" refers to a [Tcl Commands%|%built-in] Tcl command .  

The use of the term "core" carries over to other programs .
A core command of [incr tcl] would be one of the commands from the
source distribution variations of that software as maintained by its
project maintainers.

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A core dump is the memory image that is produced if a program crashes and ''dumps core''. A core dump can be a valuable help for debugging the crash, if you are an expert in understanding [C] stack traces and particularly if you configured Tcl and the extensions with -enable-symbols .

[DKF]: A ''core dump'' is like the corpse of a process on Unix.  Sometimes, you just have to carry out an autopsy to satisfy the coroner...

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