Objects of type
DOM_EXEC represent kernel
functions implemented in C++.
Unlike functions defined at the library level (which are stored
in objects of type
DOM_PROC), functions defined in C++ in
the MuPAD® kernel are represented by objects of type
Most kernel functions are actually stored inside function environments
and therefore, you can see
DOM_EXEC only when explicitly
accessing the first or second operand of those function environments.
An object of type
DOM_EXEC essentially represents
a function; using it in this way calls the corresponding function.
The operands of a
DOM_EXEC are used internally,
may change at any time and remain undocumented.