Enhanced show-doc (a.k.a ? command) for: $-0 $0 $1 $2 $3 $4 $5 $6 $7 $8 $9 $-a $-d $DEBUG $& $@ $\ $` $! $: $, $$ $. $= $> $< $? $+ $" $; $⁄ $~ $* $' $_ $-F $FILENAME $-i $-I $KCODE $-K $-l $LOADED_FEATURES $LOAD_PATH $-p $PROGRAM_NAME $SAFE $stderr $stdin $stdout $-v $VERBOSE $-w $-W alias and begin BEGIN break case class defined? def do else elsif __ENCODING__ end END ensure false __FILE__ for if in __LINE__ module next nil not or redo rescue retry return self super then true undef unless until when while yield