The Stacks project

pell check: words starting with n, o, p, q, r, N, O, P, Q, or R

Fix typo and reference

Thanks to Fred Rohrer
http://stacks.math.columbia.edu/tag/01M4#comment-128
http://stacks.math.columbia.edu/tag/01M4#comment-129

Whitespace changes

LaTeX: \Spec

	Introduced the macro

	\def\Spec{\mathop{\rm Spec}}

	and changed all the occurences of \text{Spec} into \Spec.

Latex: get rid of some overfull boxes

	modified:   algebraic.tex
	modified:   chow.tex
	modified:   coherent.tex
	modified:   cohomology.tex
	modified:   constructions.tex
	modified:   descent.tex
	modified:   desirables.tex
	modified:   divisors.tex
	modified:   etale.tex
	modified:   examples-stacks.tex
	modified:   examples.tex
	modified:   exercises.tex
	modified:   fdl.tex
	modified:   homology.tex
	modified:   hypercovering.tex
	modified:   modules.tex
	modified:   morphisms.tex
	modified:   properties.tex
	modified:   schemes.tex
	modified:   simplicial.tex
	modified:   sites.tex
	modified:   spaces.tex
	modified:   topologies.tex
	modified:   varieties.tex

Started tags infrastructure

	new file:   scripts/add_tags.py
	modified:   scripts/functions.py
	new file:   tags/initial_tags
	new file:   tags/tags

More neurotic changes

Added universal closedness of Proj when the graded ring is finitely
generated over its degree 0 part

	modified:   constructions.tex
	modified:   morphisms.tex

A bit more stuff on constructing schemes, specifically
relative spectrum
vector bundles
Proj of a ring
relative Proj
projective bundles

	modified:   algebra.tex
	modified:   coding.tex
	modified:   constructions.tex
	modified:   modules.tex
	modified:   morphisms.tex
	modified:   schemes.tex
	modified:   sheaves.tex

Added stuff on Proj of a graded ring

	modified:   algebra.tex
	modified:   constructions.tex
	modified:   modules.tex
	modified:   properties.tex
	modified:   schemes.tex