Start debugging the process *path, with the arguments *args, in the directory *sdir. If any of the arguments are NULL, they are taken from the process options specified under Debugger->Process Options
Examples:
#include <kernwin.hpp> // For askstr()
#include <dbg.hpp>
// Ask the user for arguments to supply.
char *args = askstr(HIST_IDENT, "", "Arguments");
// Run the process with those arguments
start_process(NULL, args, NULL);