added mode description for diagonal rngmode

main.cpp

@@ -35,9 +35,10 @@ int main (int argc, char **argv)
     //                      1. random numbers in screen range
     //                      2. numbers are ordered as rectangle
     //                      3. numbers are ordered as circle around screen center
+    //                      4. numbers are ordered as diagonal line
     // -runs <count>        runs performance mode multiple times
     // -stepsize <size>     time between autosteps; if 0 or not provided -> manual steps
-    // TODO: care a little more <3
+    // TODO: care a little more <3 --> getopt
     bool vis = false;
     bool akl = false;
     std::string fileRnd = "";