open register in buffer

[goyalyashpal]

:n <ret> "b p <make changes> %y
(open a new buffer, select register, paste, make changes, select all, yank)

ref: :tutor 8.1 (as of v22.12)

Is this the only way to view and modify a buffer?

i remember seeing some discussion about modifying buffers in helix before, but have searched with above title both here at discussions and at helix issues, but couldn't find