In-Game Wiki in Unity in 15 min

public class WikiUI : MonoBehaviour, IPointerClickHandler
{
    public TextMeshProUGUI text;

    public void OnenWikiAbout(string page)
    {
        text.text = "<line-height=125%>";

        if (page == "negotiations")
        {
            text.text += "Negotiations<br>Negotiations start when there are several opinions on the next steps. During negotiations, you and your colleagues communicate about which course to take.";
        }
        else if (page == "homepage")
        {
            text.text += "Wiki Index:<br><link=negotiations><u>Read about negotiations</u></link>";
        }
        else
        {
            text.text = "404<br>";
        }

        text.text += "<br><link=homepage><u>Go Home</u></link>";
    }

    public void OnPointerClick(PointerEventData eventData)
    {
        // camera is null only if you use Screen Space Overlay, otherwise add camera reference
        int linkIndex = TMP_TextUtilities.FindIntersectingLink(text, eventData.position, null);

        if (linkIndex != -1)
        {
            TMP_LinkInfo linkInfo = text.textInfo.linkInfo[linkIndex];
            OnenWikiAbout(linkInfo.GetLinkID());
        }
    }
}