## Comments

    %
    % Some comments
    %
    %

## Keywords

    @attribute
    @data
    @relation

## Numbers

    42
    0.14

## Strings

    'Single \'quoted\' string'
    "Double \"quoted\" string"

## Full example

    % 1. Title: Iris Plants Database
    %
    % 2. Sources:
    %      (a) Creator: R.A. Fisher
    %      (b) Donor: Michael Marshall (MARSHALL%PLU@io.arc.nasa.gov)
    %      (c) Date: July, 1988
    %
    @RELATION iris

    @ATTRIBUTE sepallength  NUMERIC
    @ATTRIBUTE sepalwidth   NUMERIC
    @ATTRIBUTE petallength  NUMERIC
    @ATTRIBUTE petalwidth   NUMERIC
    @ATTRIBUTE class        {Iris-setosa,Iris-versicolor,Iris-virginica}

    @DATA
    5.1,3.5,1.4,0.2,Iris-setosa
    4.9,3.0,1.4,0.2,Iris-setosa
    4.7,3.2,1.3,0.2,Iris-setosa
    4.6,3.1,1.5,0.2,Iris-setosa
    5.0,3.6,1.4,0.2,Iris-setosa
    5.4,3.9,1.7,0.4,Iris-setosa
    4.6,3.4,1.4,0.3,Iris-setosa
    5.0,3.4,1.5,0.2,Iris-setosa
    4.4,2.9,1.4,0.2,Iris-setosa
    4.9,3.1,1.5,0.1,Iris-setosa