Processing directives documentation update

[paalkr]

Hi!

I would suggest that someone with the right privileges adds the following to the documentation

In the LAYER mapfile reference (http://mapserver.org/mapfile/layer.html), new headline Label directives: PROCESSING "LABEL_NO_CLIP=True"

In the Raster Data, Special Processing Directives (http://mapserver.org/input/raster.html#special-processing-directives) PROCESSING "OVERSAMPLE_RATIO=[int]"

Both are quite handy, and information about the usage should be easy accessible in the documentation.

[jmckenna]

You are a smart man Pal...you're right this must be documented. Thanks! :)

[havatv]

Fixed for 6.0 and trunk documentation in r11989. Also marking #3952 a duplicate of this one.

[zjames]

The description for the LABEL_NO_CLIP directive is misleading. It doesn't turn off label clipping, it avoids clipping of shapes when determining a label position.

See ​http://trac.osgeo.org/mapserver/ticket/2447 for details.

a better description might be:

"The LABEL_NO_CLIP processing option can be used to skip clipping of shapes when determining associated label anchor points. This avoids changes in label position as extents change between map draws. It also avoids duplicate labels where features appear in multiple adjacent tiles when creating tiled maps."

[havatv]

Thanks, zjames. I have updated the trunk and 6.0 docs with your description in r12538.