I currently run macros from a VB application, and my code within
the app looks something like:

ShellExecute(0&, vbNullString, "excel", q & file_to_operate_on & q & q & file_macro_is_in & q, vbNullString, vbNormalFocus)

However, I wanted to ask, suppose file_macro_is_in has many macros defined
in it, and I want to execute only one particular one. Does Excel have any
command line arguments that would allow me to do this? For instance,
making something along the lines of the following possible:

ShellExecute(0&, vbNullString, "excel", q & file_to_operate_on & q & q & file_macro_is_in & q & "-mymacroname", vbNullString, vbNormalFocus)

Also, so that I don't ask too many questions that could probably be answered
by some reading, can anyone recommend a source for thorough documentation
on the Excel API + command line arguments to Excel? Thank you.