### Name: RNAString-class
### Title: The RNAString class
### Aliases: class:RNAString RNAString-class RNA_ALPHABET
###   initialize,RNAString-method RNAString alphabet,RNAString-method
### Keywords: methods classes

### ** Examples

  d <- DNAString("TTGAAAA-CTC-N")
  r <- RNAString(d)
  alphabet(r)
  RNA_ALPHABET