Hero digger

Of course, digging will be allowed in any city. There will also be an emergency stop.

Great!

But why should the instructions be called from within the program itself? For convenience? This is no longer an instruction, but a description.

Yes, just for convenience.
Of course, the most optimal solution in this regard would be to implement a system where the "hero digger" tracks the player's actions, i.e., as it was done in the "boat digger":
Step 1: Switch to windowed mode 640x480;
Step 2: Delete or move all saves from the GAMES folder;
Step 3: Make a save from which you will dig for heroes.
Note: Make sure that there is no hero in the Castle where the digging will take place. There should be at least 5000 gold in the treasury.
Step 4: Exit to the main menu of Heroes 1.
Step 5: Set the number of attempts, the Castle number, and the hero window in which you need to dig.
Step 6: Now everything is ready for digging.

Any deviation from these steps would notify the player about it. In addition, with the introduction of this implementation, the number of questions from players and the number of incorrect operations of the "hero digger" would be reduced to a minimum.;)
In my opinion, this is very convenient for the player.;)

I have already added another nice feature: a file with digging statistics is created. It will look something like this:
Hero1 Warlock 8 Centaur 0 Gargoyle
Hero2 Knight 30 Peasant 0 Archer
Hero3 Warlock 7 Centaur 4 Gargoyle
Hero4 Knight 30 Peasant 0 Archer
Hero5 Sorceress 19 Fairy 3 Gnome
Hero6 Warlock 8 Centaur 0 Gargoyle
Hero7 Sorceress 18 Fairy 0 Gnome
Hero8 Knight 46 Peasant 5 Archer
Hero9 Knight 48 Peasant 5 Archer
Hero10 Warlock 6 Centaur 3 Gargoyle

Great! Can you add 2 more columns for the lazy ones?:o

Hero1 Warlock 8 Centaur 0 Gargoyle 1-1.gm5 Al5.bmp
Hero2 Knight 30 Peasant 0 Archer 1-3.gm5 Al3.bmp

Sincerely, VDV_forever