Could "Key H to add && instrument command" be added into the help manual?

[brickblock369]

I think the information about pressing H in the keyboard to add && instrument command should be in the help manual, either in "Pattern editor" or "Key commands"? I couldn't find any info about it in the help manual, I only knew how to input it by word of mouth.

Additionally, I suggest that inputting && as an instrument value can be customized (i.e. not always having to rely on pressing H)