Scheme Features to R

assignment	Assignment operators
basic-aliases	Lisp-friendly basic aliases
compose	Compose functions
connectives	Conjunction and disjunction
curry	Partial function application
flow-control	Flow-control operators
for.each	Zipped function application
funprog-extra	Additional higher-order functions
gensym	Build a temporary symbol
lambda	Construct an anonymous function in infix code
lexical	Lexical binding constructs
list-access	List/vector access functions
list-utilities	List utilities
macro	Lisp macros for R
member-if	Searching for tails of sequences
nonbinary-comparison	Non-binary comparison operators
numeric	Numeric functions
prefix	Facilities for writing R code in prefix notation
quasiquote	Partial quoting in expressions
schemeR	Write R code in a Lisp-like form
schemeR-package	schemeR: Make R more like Lisp/Scheme
zip	Transposition of sequences