Args                    Formatted Argument List of a Function
aggregate.table         Create 2-Way Table of Summary Statistics
combine                 Combine R Objects With a Column Labeling the
                        Source
elem                    Display Information about Elements in a Given
                        Object
env                     Display Information about All Loaded
                        Environments
interleave              Interleave Rows of Data Frames or Matrices
is.what                 Run Multiple is.* Tests on a Given Object
keep                    Remove All Objects, Except Those Specified
ll                      Display Information about Objects in a Given
                        Environment
matchcols               Select columns names matching certain critera
nobs                    Compute the Number of Non-missing Observations
read.xls                Read Excel files
rename.vars             Remove or rename variables in a dataframe
reorder.factor          Reorder the Levels of a Factor
trim                    Remove leading and trailing spaces from
                        character strings
