* arts-2-1-677

	* src/m_abs.cc, src/methods.cc (f_gridSelectFIndex):
	Removed, since this is obsolete with the new absorption lookup
	table frequency treatment.

        * doc/uguide/absorption.tex: Overall revision, added new intro and
	CIA part.

        * doc/uguide/common.tex: Removed deprecated dvips option from
	\usepackage{graphicx}.

        * doc/uguide/interpolation.tex (Higher order interpolation): Added
	paragraph on zeroth-order interpolation (nearest neighbor).

        * doc/uguide/references.bib (richard:12): Added.

	* doc/uguide/Figs/abs/plot_all_arts_cia_generic_1.pdf: Added.

        * doc/uguide/Figs/abs/plot_earth_continua_1_1.pdf: Added



git-svn-id: https://www.sat.ltu.se/svn/rt/arts/trunk@8506 aaf1aab0-4228-0410-ad68-8dceda47f409