List of all placeholders taken from the code

end_filament_gcode toolchange_gcode start_filament_gcode filament_extruder_id previous_extruder next_extruder layer_num layer_z timestamp year month day hour minute second printer_preset preset_name num_extruders normal_print_time silent_print_time used_filament extruded_volume total_toolchanges total_wipe_tower_cost total_wipe_tower_filament scale input_filename input_filename_base print_time objects_used_material support_used_material total_cost total_weight first_layer_height perimeters top_solid_layers support_material_enforce_layers ensure_vertical_shell_thickness thin_walls spiral_vase support_material_extruder support_material_interface_extruder support_material_synchronize_layers wipe_tower overhangs fill_pattern fill_density support_head_penetration support_head_front_diameter gcode_flavor bed_shape bed_custom_texture bed_custom_model filament_diameter temperature first_layer_temperature bed_temperature first_layer_bed_temperature layer_height extruder brim_width support_material support_material_buildplate_only support_material_auto pad_enable pad_around_object supports_enable support_buildplate_only wipe_tower_x wipe_tower_y wipe_tower_rotation_angle single_extruder_multi_material nozzle_diameter extruder_colour wipe use_firmware_retraction bottle_weight bottle_volume gcode_comments