bug#13081: 24.3.50; doc of `compare-strings' says nothing about the compare function used

["Drew Adams" <drew.adams@oracle.com>]

The doc mentions case-sensitivity, and it says what the function does if
the specified portions match etc.  But it says NOTHING (apart from
possibly ignoring case) about what "matching" means.  Is lexicographic
order used?
 
How can you document a function about comparing two sequences without
defining/mentioning the helper function that is used to compare two
elements, one from each sequence?
 

In GNU Emacs 24.3.50.1 (i386-mingw-nt5.1.2600)
 of 2012-12-03 on MS-W7-DANI
Bzr revision: 111077
agustin.martin@hispalinux.es-20121203172342-ifsebjmhksk28qa9
Windowing system distributor `Microsoft Corp.', version 5.1.2600
Configured using:
 `configure --with-gcc (4.7) --no-opt --enable-checking --cflags
 -Ic:/emacs/libs/libXpm-3.5.10/include -Ic:/emacs/libs/libXpm-3.5.10/src
 -Ic:/emacs/libs/libpng-1.2.37-lib/include -Ic:/emacs/libs/zlib-1.2.5
 -Ic:/emacs/libs/giflib-4.1.4-1-lib/include
 -Ic:/emacs/libs/jpeg-6b-4-lib/include
 -Ic:/emacs/libs/tiff-3.8.2-1-lib/include
 -Ic:/emacs/libs/libxml2-2.7.8-w32-bin/include/libxml2
 -Ic:/emacs/libs/gnutls-3.0.9-w32-bin/include
 -Ic:/emacs/libs/libiconv-1.9.2-1-lib/include'