I happened to run across these sections today which are listed at the 
bottom of the page:

http://wiki.povray.org/content/Reference:Pattern

Some inconsistencies therein and I suggest the following changes in 
where and how patterns are listed in the subsections :

http://wiki.povray.org/content/Reference:General_Patterns
--------------------
agate
boxed
bozo
brick - Move to Discontinuous_Patterns
bumps
cubic
crackle - (note "solid keyword makes discontinuous")
cylindrical
density_file - Move to Special_Patterns
dents
facets  - Move to Discontinuous_Patterns
fractal
function
gradient
granite
hexagon - Remove. Already listed in Discontinuous_Patterns
leopard
marble
onion
pavement - Move to Discontinuous_Patterns
pigment_pattern - Move to Special_Patterns
planar
potential - Add as not today listed and new to 3.7.1
quilted
radial
ripples
spherical
spiral1
spiral2
spotted
square - Remove. Already listed in Discontinuous_Patterns
tiling - Move to Discontinuous_Patterns
waves
wood
wrinkles

http://wiki.povray.org/content/Reference:Discontinuous_Patterns
(Perhaps call these Discrete-Region Patterns?)
--------------------
cells
checker
crackle (note "when used with solid keyword")
hexagon
object
pavement - Move here from General
square
tiling - Move here from General
triangular

Add a note something like:
"Parts of the pavement and tiling patterns are discontinuous or clamped 
while other parts ramp."


http://wiki.povray.org/content/Reference:Normal-Dependent_Patterns
--------------------
aoi
facets  - Move here from general
slope

Need to strike the general sentence:
"As such, these patterns are suitable for object normals only."
for perhaps:
"The facets pattern can only be used in a normal statement."


http://wiki.povray.org/content/Reference:Special_Patterns
--------------------
average
density_file - Move here from General
image
pigment_pattern - Move here from General

Thanks.
Bill P.

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