If you visit certain file names frequently, you can visit them more conveniently if you put their names in registers. Here’s the Lisp code used to put a file name into register r:
(set-register r '(file . name))
(set-register ?z '(file . "/gd/gnu/emacs/19.0/src/ChangeLog"))
puts the file name shown in register ‘z’.
To visit the file whose name is in register r, type C-x r j r. (This is the same command used to jump to a position or restore a frame configuration.)
Similarly, if there are certain buffers you visit frequently, you can put their names in registers. For instance, if you visit the ‘*Messages*’ buffer often, you can use the following snippet to put that buffer into the ‘m’ register:
(set-register ?m '(buffer . "*Messages*"))
To switch to the buffer whose name is in register r, type C-x r j r.