If you want to have structured nodal data in a buffer, the cookie package can be a help to you.
Cookie is a package that implements a connection between a
dll (a doubly linked list) and the contents of a buffer.
Possible uses are dired (have all files in a list, and show them),
buffer-list, kom-prioritize (in the LysKOM elisp client) and
others. The CVS control package `pcl-cvs.el' uses `cookie.el'.
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