Meanings of latin capital letter o with stroke in English

Really now, what is one to make of a switch labelled |Ø|?

Ø Exchange control penalties The applicant can elect to repatriate the unauthorised foreign asset or leave it abroad.

The Unit speaks the symbol of the empty set, Ø, but the line through it is red, unmaking it.

Who can apply for the relief Ø Individuals, companies trusts and deceased estates; Ø Donors and beneficiaries of foreign discretionary trusts.

114ø E., as already explained, and thence to the north-east formed a second rough boundary between Tsin and nearly all the remaining orthodox Chinese states.