Basics: Basics
Basics|sysdata: Basic System Variables # != S
Basics|datasets: Datasets available by data() # != S
Basics|data: Environments, Scoping, Packages # ~= S
Basics|manip: Data Manipulation
Basics|attribute: Data Attributes	
Basics|classes: Data Types (not OO)
Basics|classes|character: Character Data Operations
Basics|classes|complex: Complex Numbers
Basics|classes|category: Categorical Data
Basics|classes|NA: Missing Values # != S
Basics|list: Lists
Basics|chron: Dates and Times
Graphics: Graphics
Graphics|aplot: Add to Existing Plot / internal plot
Graphics|dplot: Computations Related to Plotting
Graphics|hplot: High-Level Plots
Graphics|iplot: Interacting with Plots
Graphics|color: Color, Palettes etc.
Graphics|dynamic: Dynamic Graphics
Graphics|device: Graphical Devices
Mathematics: Mathematics
Mathematics|array: Matrices and Arrays
Mathematics|array|algebra: Linear Algebra
Mathematics|arith: Basic Arithmetic and Sorting	# != S
Mathematics|math: Mathematical Calculus etc. # != S
Mathematics|logic: Logical Operators
Mathematics|optimize: Optimization:
Mathematics|symbolmath: `Symbolic Math', as polynomials, fractions
Programming: Programming, Input/Ouput, and Miscellaneous
Programming|programming: Programming
Programming|programming|interface: Interfaces to Other Languages
Programming|iteration: Looping and Iteration
Programming|methods: Methods and Generic Functions
Programming|print: Printing
Programming|file: Input/Output Files
Programming|connection: Input/Output Connections
Programming|error: Error Handling
Programming|environment: Session Environment
Programming|utilities: Utilities
Programming|misc: Miscellaneous
Programming|documentation: Documentation
Statistics: Statistics
Statistics|datagen: Functions for generating data sets
Statistics|distribution: Probability Distributions and Random Numbers
Statistics|univar: simple univariate statistics  # != S
Statistics|htest: Statistical Inference
Statistics|models: Statistical Models
Statistics|models|regression: Regression
Statistics|models|regression|nonlinear: Non-linear Regression # only?
Statistics|robust: Robust/Resistant Techniques
Statistics|design: Designed Experiments
Statistics|multivariate: Multivariate Techniques
Statistics|ts: Time Series
Statistics|survival: Survival Analysis
# actually, `survival4' rather than `survival', but do we want `survival5'
# later?
Statistics|nonparametric: Nonparametric Statistics # w/o `smooth'
Statistics|smooth: Curve (and Surface) Smoothing
Statistics|cluster: Clustering
Statistics|loess: Loess Objects
Statistics|tree: Regression and Classification Trees
MASS: Keywords added in MASS2 (1997)
MASS|classif: Classification # package `class'
MASS|neural: Neural Networks # package `nnet'
MASS|spatial: Spatial Statistics # package `spatial'