def generate_entry_label(entry):
    """
    Generates a label for the pourbaix plotter

    Args:
        entry (PourbaixEntry or MultiEntry): entry to get a label for
    """
    if isinstance(entry, MultiEntry):
        return " + ".join([latexify_ion(e.name) for e in entry.entry_list])
    else:
        return latexify_ion(latexify(entry.name))