A more user-friendly schema validation button for the user

[Logende]

E.g., using JTutor (https://dl.acm.org/doi/abs/10.1145/3735106.3736532?casa_token=A2Kb9fkARZwAAAAA:RO6AO_ar6pR0CClVC2plpKfpxst1CICmR3PXSpOxNnVCBg93vYXZOk2nxWtQ8drI30NtBLtLseE)