It provides external jars required for the 'rjdverse' (as 'rjd3toolkit', 'rjd3x13' and 'rjd3tramoseats').

A comprehensive tool for setting up seasonal data pipelines
    using 'JDemetra+' (version 3) and 'rjdverse'. This includes setting up
    a new working environment, creating and selecting calendar regressors,
    managing specifications (trading-days regressors and outliers) at the
    workspace level, making a workspace usable by the 'cruncher', removing
    insignificant outliers, and comparing workspaces.

Interface to 'JDemetra+' 3.x (<https://github.com/jdemetra>)
    time series analysis software. It offers full access to txt, csv, xml
    and spreadsheets files which are meant to be read by 'JDemetra+'
    Graphical User Interface.

R Interface to 'JDemetra+ 3.x'
    (<https://github.com/jdemetra>) time series analysis software.  It
    provides functions allowing to model time series (create outlier
    regressors, user-defined calendar regressors, Unobserved Components
    AutoRegressive Integrated Moving Average (UCARIMA) models...), to test
    the presence of trading days or seasonal effects and also to set
    specifications in pre-adjustment and benchmarking when using 'rjd3x13'
    or 'rjd3tramoseats'.

Interface to 'JDemetra+' 3.x (<https://github.com/jdemetra>)
    time series analysis software.  It offers full access to options and
    outputs of 'TRAMO-SEATS' (Time series Regression with ARIMA noise,
    Missing values and Outliers - Signal Extraction in ARIMA Time Series),
    including 'TRAMO' modelling (ARIMA model with outlier detection and
    trading days adjustment). ARIMA = AutoRegressive Integrated Moving Average.

R Interface to 'JDemetra+ 3.x'(<https://github.com/jdemetra>).  
    It offers several functions to manipulate 'JDemetra+' workspaces, which 
    can be read by the software and can store several seasonal adjusted series 
    along with user-defined calendars or regression variables.

R Interface to 'JDemetra+' 3.x
    (<https://github.com/jdemetra>) time series analysis software.  It
    offers full access to options and outputs of 'X-13', including
    Reg-ARIMA modelling (automatic AutoRegressive Integrated Moving
    Average (ARIMA) model with outlier detection and trading days
    adjustment) and X-11 decomposition.