Reset current_step to 0 and update comments in machine_1 button highlighting logic

services/nginx/app/modules/dynamicimages/images/machine_1.php

@@ -29,7 +29,7 @@ class machine_1 extends dynamicimages_image
     public int $button_columns_spacing = 442; // Spacing between columns of buttons
     public array $highlighted_buttons = [
         // Array of button positions to highlight (0 indexed, left to right, top to bottom)
-        0, 2, 4, 7
+        // e.g., 0, 2, 4, 7
     ];
     // Reset button
     public int $reset_button_highlight_size = 380; // size of the highlighted reset button
@@ -38,7 +38,7 @@ class machine_1 extends dynamicimages_image
     // Button counts
     public int $button_counter = 0; // Is incremented every time a button is drawn
     // Current step
-    public int $current_step = 3; // No "click counter" completed yet = 0
+    public int $current_step = 0; // No "click counter" completed yet = 0
     // Config
     public bool $only_generate_current_step = false; // If true, only generate the current step button highlights