** Summary **

'''Tcl_NewListObj''', a function in the [Tcl C API%|%Tcl C API], creates a new
value that has the internal representation of a [list]

** Description **

A performance trick to pre-allocate an internal [list] representation of some size, i.e., 10000:

======c
Tcl_NewListObj(10000, NULL)
======

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