Is there really no manual for Bitcoin Core? This is not the first time I'm desperately searching for Bitcoin Core help and finding none, but look at this: https://bitcoincore.org/en/doc/0.20.0/
That's the closest thing to a &quot;manual&quot; I can find. But it's about RPC commands. I've gone through their entire damn website (both ones, in fact) and made numerous web searches but find nothing resembling a manual. Where is the manual? Is there a manual?
Right now, I'm trying to get official descriptions of these two configuration options:

blocknotify
walletnotify

They are not mention anywhere on that page, and seemingly nowhere else officially. Am I supposed to guess what they mean and try to piece together information from ancient questions asked by random people online? How is anyone supposed to get a Bitcoin payment system running and actually use Bitcoin when there is no manual and a hundred BIPs are released per week?
The lack of information has caused countless of my projects to never get off the ground. I don't understand the mentality that a lot of people have that things are somehow &quot;obvious&quot; or &quot;don't need a manual&quot;. Especially not when it's for a crucial piece of software which we're supposed to use to revolutionize the world.
There is a manual documenting both examples. The man page for bitcoind.
man bitcoind shows me:
       -blocknotify=&lt;cmd&gt;

              Execute command when the best block changes (%s in cmd is replaced by block hash)
        ....
       -walletnotify=&lt;cmd&gt;

              Execute command when a wallet transaction changes (%s in cmd is replaced by TxID)

They're really not that hard to use.
Note that this machine runs a slightly older version of bitcoind. Newer versions support %w for the name of the wallet, as bitcoind now supports multiple wallets, in addition to %s for the transaction ID.