How does MrC/MrCpp resolve multiple occurrences of options?
You can repeat any option on the command line. In most cases the last use of the option is the one that takes effect; the following options are cumulative: -d, -i, -xi, -sym on. The -i option is cumulative and also sensitive to order. MrC/MrCpp searches for directories named using the -i option in the order in which they appear on the command line.