What is the Hashkey on the keyboard?

Excuse me, could you please clarify what you mean by "Hashkey on the keyboard"? Typically, when we talk about hashkeys in the context of cryptocurrency and finance, we're referring to a cryptographic hash function that converts an input of any size into a fixed-size string of digits and letters, known as a hash value. However, if you're referring to a specific key or button on a keyboard labeled as "Hashkey," I'm not immediately familiar with such a designation. Could you provide more context or perhaps you're referring to a specific keyboard model or software application?