Hi
I find it useful having quick access to info on object type definitions - in other words what goes in to it. Currently it is a little bit of a hassle finding this info. Hence it might be nice of having page https://en.numista.com/catalogue/types.php added as a pop-up window on each object page. Whether (1) all types are explained or (2) all types within second level and below, where this type belongs into or (3) just the one group as is currently added on page or (4) all and within pop-up widow cursor jumps to the specific type (5) or something else, I would leave to the admins to decide.
Link https://en.numista.com/catalogue/types.php should be also added here https://en.numista.com/help/scope-of-the-numista-catalogue-200.html. And also all definitions on these two pages should be somewhat aligned or maybe even pages joined into one.
best regards