beginning-of-buffer-other-windowbeginning-of-buffer-other-window is an interactive compiled Lisp function in `
window.el'. It is bound to <M-begin>, <M-home>, ESC <begin>, ESC <home>.
(beginning-of-buffer-other-window ARG) Move point to the beginning of the buffer in the other window. Leave mark at previous position. With arg N, put point N/10 of the way from the true beginning.