cheat sheets.

Cheat Sheet Title: [ no_spaces_alphanumeric_only ]

Cheat Sheet:
ADDITIONAL_LOAD_PATHS ARGF ARGV ActionController ActionView ActiveRecord ArgumentError Array BasicSocket Benchmark Bignum Binding CGI CGIMethods CROSS_COMPILING Class ClassInheritableAttributes Comparable ConditionVariable Config Continuation DRb DRbIdConv DRbObject DRbUndumped Data Date DateTime Delegater Delegator Digest Dir ENV EOFError ERB Enumerable Errno Exception FALSE FalseClass Fcntl File FileList FileTask FileTest FileUtils Fixnum Float FloatDomainError GC Gem GetoptLong Hash IO IOError IPSocket IPsocket IndexError Inflector Integer Interrupt Kernel LN_SUPPORTED LoadError LocalJumpError Logger Marshal MatchData MatchingData Math Method Module Mutex Mysql MysqlError MysqlField MysqlRes NIL NameError NilClass NoMemoryError NoMethodError NoWrite NotImplementedError Numeric OPT_TABLE Object ObjectSpace Observable Observer PGError PGconn PGlarge PGresult PLATFORM PStore ParseDate Precision Proc Process Queue RAKEVERSION RELEASE_DATE RUBY RUBY_PLATFORM RUBY_RELEASE_DATE RUBY_VERSION Rake RakeApp RakeFileUtils Range RangeError Rational Regexp RegexpError Request RuntimeError STDERR STDIN STDOUT ScanError ScriptError SecurityError Signal SignalException SimpleDelegater SimpleDelegator Singleton SizedQueue Socket SocketError StandardError String StringScanner Struct Symbol SyntaxError SystemCallError SystemExit SystemStackError TCPServer TCPSocket TCPserver TCPsocket TOPLEVEL_BINDING TRUE Task Text Thread ThreadError ThreadGroup Time Transaction TrueClass TypeError UDPSocket UDPsocket UNIXServer UNIXSocket UNIXserver UNIXsocket UnboundMethod Url VERSION Verbose YAML ZeroDivisionError

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