okay I'll go to my corner and put on the dunce hat and retreat to dnmsnoobs
it's a way to rebroadcast your stuck transaction with a higher fee
but seriously I thought you guys might like to hear about this over here on the main sub too, I just recently learned about it and I assume quite a few of you haven't either?. Since it seems like btc fees are going up and block size doesn't increase there's been a huge increase in stuck transactions and avg satoshi's/byte to get your transaction included in the next block.
Here's another link about it
https://bitcoincore.org/en/faq/optin_rbf/
And here's my post on the noobs sub
is it only supported by electrum and one other wallet? what version of electrum?
Download lastest electrum version. It has RBF