Variables in USPARTY Data Set

Below are the variables and some labels that are in the usparty data set used in some of my statistics programs.

YEAR
RCONG= REPUBLICAN CONGRESSIONAL VOTE
DCONG= DEMOCRATIC CONGRESSIONAL VOTE
RPRES= REPUBLICAN PRESIDENTIAL VOTE
DPRES= DEMOCRATIC PRESIDENTIAL VOTE
G= 1 ON YEAR ELECTION, 0 OFF YEAR
PRCONT= 1 REP CONTROLS PRES., 0 DEM CONTROLS
PDCONT= 1 DEM CONTROLS PRES., 0 REP CONTROLS
TOTPRES= TOTAL PRESIDENTIAL VOTE
TOTCONG= TOTAL CONGRESSIONAL VOTE
RREP= NUMBER OF REPUBLICAN REPRESENTATIVES
DREP= NUMBER OF DEMOCRATIC REPRESENTATIVES
TR= VOTE FOR T. ROOSEVELT, BULL MOOSE, 1912
INFLAT= PRICE INDEX, 1967 IS 100
PREVINFL= PRICE INDEX FOR THE PREVIOUS YEAR
PREVGNP= GNP FOR THE PREVIOUS YEAR
GNP= GROSS NATIONAL PRODUCT IN 1958 DOLLARS
TOTPOP18= TOTAL POPULATION 18 YEARS OR OLDER
ELIGIBLE
MRCONG= MOBILIZED REP CONG VOTE PROP
MDCONG= MOBILIZED DEM CONG VOTE PROP
MRPRES= MOBILIZED REP PRES VOTE PROP
MDPRES= MOBILIZED DEM PRES VOTE PROP
MTOTCONG= MOBILIZED TOTAL CONG VOTE PROP
MTOTPRES= MOBILIZED TOTAL PRES VOTE PROP
MTR=
VRCONG=
VDCONG=
VRPRES=
VDPRES=
VTOTCONG=
VTOTPRES=
VTR=
LMRCONG= LAG OF MOBIL. REP CONG VOTE PROP
LMDCONG= LAG OF MOBIL. DEM CONG VOTE PROP
LRREP=
LDREP=
REPRATIO=
DRATIO=
RRATIO=
REPSHIFT=
MRATIO1=
MRATIO2=
ON= 1 FOR AN ON-YEAR ELECTION, 0 FOR AN OFF-YEAR ELECTION
ONR1=
ONR2=
OND1=
OND2=
ON1=
ON2=
OFF=
OFF1=
OFF2=
PRESDIF=
RPRESDIF=
LRPDIF=
LPRESDIF=
LMTCONG=
DIFOYTC=
SHIFT=
FDR=
CPOINT=
CPCGNP= CHANGE IN YEARLY PER CAPITA GNP
CGNP= CHANGE IN YEARLY GNP
LGNP=
LINFLAT=