WordNet (r) 3.0 (2006):

documentation
    n 1: confirmation that some fact or statement is true through
         the use of documentary evidence [syn: documentation,
         certification, corroboration]
    2: program listings or technical manuals describing the
       operation and use of programs [syn: software documentation,
       documentation]
    3: documentary validation; "his documentation of the results was
       excellent"; "the strongest support for this view is the work
       of Jones" [syn: documentation, support]

The Free On-line Dictionary of Computing (19 January 2023):

documentation

    The multiple kilograms of macerated, pounded,
   steamed, bleached, and pressed trees that accompany most
   modern software or hardware products (see also tree-killer).
   Hackers seldom read paper documentation and (too) often resist
   writing it; they prefer theirs to be terse and on-line.  A
   common comment on this predilection is "You can't grep dead
   trees".

   See drool-proof paper, verbiage, treeware.

   [Jargon File]

   (2003-10-25)


The Jargon File (version 4.4.7, 29 Dec 2003):

documentation
 n.

    The multiple kilograms of macerated, pounded, steamed, bleached, and
    pressed trees that accompany most modern software or hardware products (see
    also tree-killer). Hackers seldom read paper documentation and (too)
    often resist writing it; they prefer theirs to be terse and on-line. A
    common comment on this predilection is “You can't grep dead trees”. See 
    drool-proof paper, verbiage, treeware.