math/train_eval.json

{
  "content": {
    "operators": ["+", "-", "×"],
    "operand_range": [10, 99],
    "operand_count": 2,
    "numeral_system": "ascii"
  },
  "render": {
    "canvas_size": [340, 100],
    "fonts": ["/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf"],
    "font_size_range": [38, 38],
    "char_color_range": {"r": [0, 80], "g": [0, 80], "b": [0, 80]},
    "rotation_range_deg": [-20, 20],
    "char_spacing_range": [-3, 3]
  }
}