svydesign               Specify a survey design
twophase                Two-phase designs
subset.survey.design    Subset of survey
update.survey.design    Add variables to a survey design
postStratify            Post-stratify a survey design
rake                    Rake a survey design
calibrate		Calibration and generalised raking
estWeight               Estimated weights for two-phase designs
svrepdesign             Replication-weight designs
as.svrepdesign          Compute replication weights for a design
svydesign.imputationList  Designs for multiply-imputed data.

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svyplot                 Survey-weighted graphics
svyhist                 Survey-weighted histogram
svysmooth               Smoothers and density estimates
svycdf                  Cumulative distribution functions
svyboxplot              Survey-weighted boxplots
svyby                   Tables of statistics 
ftable.svystat          Formatted tables of statistics
ftable.svrepstat
ftable.svyby
cv			extract coefficient of variation
SE			extract standard error
deff			extract design effect
svycontrast             linear combinations of estimates

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svycoxph                Survey-weighted Cox models
svyglm                  Survey-weighted generalised linear models.
svyquantile             Summary statistics for sample surveys
svytotal
svymean
svyvar
svyratio
svytable                Contingency tables
svychisq                Tests for two-way tables
svykappa                Cohen's kappa for inter-rater agreement
svymle                  Maximum pseudolikelihood estimation in complex
                        surveys

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withReplicates          Replicate variances for arbitrary statistics

                 ----
hadamard                Hadamard matrices
is.hadamard
paley                   Paley-type Hadamard matrices
                 -----

Utility functions:
make.calfun            Define calibration metrics
cal.linear
cal.raking
cal.logit
*svy.varcoef            Sandwich variance estimator for glms
*svyCprod               Computations for survey variances
*svyrecvar              Computations for multistage samples
*svrVar                 Computations for replication variances
jk1weights              create replication weights
jknweights              create replication weights
bootweights             create replication weights
brrweights              create replication weights
regTermTest             Test sets of terms in a regression model
grake                  Computations for generalised raking
*regcalibrate           Computations for regression calibration
degf                    Degrees of freedom for replication weights
*twophasevar		Variances in two-phase designs
as.svydesign2           Convert a old svydesign object to
                        the new format.

* not exported from NAMESPACE
                 -----
Data:
fpc                     Small artificial example
scd                     Cardiac arrests example
api                     California Academic Performance Index
crowd                   Small example from VPLX manual
mu284                   Two-stage sample from MU284 population

            ----Experimental----
                 
nonresponse		create non-response object
sparseCells		look for sparse cells
neighbours		find neighbours of a cell
joinCells		collapse a set of cells together
weights.nonresponse	extract non-response weights
