Many default key bindings in Emacs don’t really make sense to an EmacsNewbie, but members of the ChurchOfEmacs would defend such legacy settings to the hilt.
‘C-f’ and ‘C-b’, respectively. Forward and backward by word are ‘M-f’ and ‘M-b’, respectively. Moving up and down a line are ‘C-n’ and ‘C-p’, respectively. Then ‘M-n’ and ‘M-p’ should be scrolling up and down a screen, respectively.‘M-h’ is ‘mark-paragraph’, ‘C-M-h’ is ‘mark-defun’, then ‘C-h’ really should be ‘mark-line’, instead of ‘help’.‘SPC’. Deleting all space and inserting one space (‘just-one-space’) is ‘M-SPC’. Deleting all horizontal space could be ‘C-SPC’, but is instead `M-\'. Set the mark is ‘C-SPC’--an alias for `C-@'.‘C-f’ and ‘C-b’. Delete forward and backward are ‘C-d’ and ‘DEL’. Forward and backward by word are ‘M-f’ and ‘M-b’. Delete forward and backward by word are are ‘M-d’ and ‘M-DEL’. Forward and backward by Sexp are ‘C-M-f’ and ‘C-M-b’. Delete forward and backward by Sexp is ‘C-M-DEL’ and ‘C-M-k’. Move forward one parentheses (‘down-list’) is bound to ‘C-M-d’!