To delete a macro, type the position of the macro in the "Macros" menu dropdown in the edit box by itself, then select 'delete macro'. Yes, I am FULLY aware that this is clunky and akward, and it is going to get changed very quickly. I just wanted this to be useful as-is, and considering that adding/deleting macros is a single-time operation for each macro, I figured this interface was "ok" for the moment.
std::fstream iFile(filename, std::ios::in);
// Do stuff here.