checkpoint              Configures R session to use packages as they
                        existed on CRAN at time of snapshot.
checkpoint-package      Install packages from snapshots on the
                        checkpoint server for reproducibility
checkpointArchives      List checkpoint archives on disk.
checkpointRemove        Remove checkpoint archive from disk.
getAccessDate           Returns the date the snapshot was last
                        accessed.
getValidSnapshots       Read list of available snapshot dates from
                        MRAN.
mranUrl                 Returns MRAN URL by querying options and
                        defaults.
scanForPackages         Scans a project (or folder) for references to
                        packages.
setSnapshot             Set default CRAN repository to MRAN snapshot
                        date.
unCheckpoint            Undo the effect of checkpoint by resetting
                        .libPath to user library location.
