Thanks for the heads up. Took me a few times in the beginning to understand what hf and/or HF or hard fork meant.

As it relates to blockchain technology, a hard fork (or sometimes hardfork) is a radical change to the protocol that makes previously invalid blocks/transactions valid (or vice-versa), and as such requires all nodes or users to upgrade to the latest version of the protocol software.
Hard Fork Definition | Investopedia
www.investopedia.com/terms/h/hard-fork.asp