svydesign               Survey sample analysis.
subset.survey.design    Subset of survey
update.survey.design    Add variables to a survey design

svycoxph                Survey-weighted generalised linear models.
svyglm                  Survey-weighted generalised linear models.
svyquantile             Summary statistics for sample surveys
regTermTest		Test terms in a regression model
svymle                  Maximum likelihood estimation in complex
                        surveys

svy.varcoef             Sandwich variance estimator for glms
svyCprod                Computations for survey variances

fpc                     Small artificial example

