I don't understand what are the uint256 of Location, and newLocation, can someone explain to me, where are they? Thank you. Below is the code:

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.18;

import {AFoundryCourseChallenge} from "AFoundryCourseChallenge.sol"; import {LessonThreeHelper} from "3-LessonHelper.sol";

contract LessonThree is AFoundryCourseChallenge, LessonThreeHelper { error LessonThree__WrongLocation();

string private constant LESSON_IMAGE = "ipfs://QmfWyPRrx1sx7sfgrwr4pNMWtqVLXMwCP4fej39m2fPfYe";

constructor(address fcn) AFoundryCourseChallenge(fcn) {
    s_booleanArray = [false, false, false, true, false];
}

/*
 * CALL THIS FUNCTION!
 * 
 * @param location - The location of the true boolean. 
 * @param newLocation - Pick the spot of the boolean for the next person!
 * @param yourTwitterHandle - Your twitter handle. Can be a blank string.
 */
function solveChallenge(uint256 location, uint256 newLocation, string memory yourTwitterHandle) external {
    if (s_booleanArray[location] != true) {
        revert LessonThree__WrongLocation();
    }
    s_booleanArray[location] = false;
    s_booleanArray[newLocation] = true;
    _updateAndRewardSolver(yourTwitterHandle);
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////// The following are functions needed for the NFT, feel free to ignore. ///////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////////
function description() external pure override returns (string memory) {
    return "Cyfrin Foundry Full Course: You've inherited skillz from solidity!";
}

function attribute() external pure override returns (string memory) {
    return "Inheritance and factory pattern knowledgable";
}

function specialImage() external pure override returns (string memory) {
    return LESSON_IMAGE;
}

}