Label:Format::Units:Description.
~ (tilda) is a line-break marker in DESCRIPTION.
The colon is a field marker. Do not use a colon in Description (or any field...).

Star identification.
WDS:UTF8_String::none:Star identifier as used in the Washington Double Star (WDS) catalog.
Double_KnownPair_ID:UTF8_String::none:For a double star observation of a known pair, the Component pair identification in the Washington Double Star Catalog (WDS). If the observation was a pair discovery, the subsequent pair identifier in the WDS is not given here.
Star_Catalog:UTF8_String::none:Name of catalogue used to identify the occulted star.~HIP = Hipparcos Catalog, from 'The Hipparcos and Tycho Catalogs, ESA SP-1200' [ESA1997]~Gaia = Gaia DR2, identified by coordinates. From Gaia data release 2 (Gaia DR2), Gaia collaboration [Astron. Astrophys., 616, A1 (2018)] Only used when the star was not in HIP or UCAC4.~Tycho2 = Tycho-2 Catalog, from 'The Hipparcos and Tycho Catalogs, ESA SP-1200' [ESA1997]~UCAC4 = The fourth U.S. Naval Observatory CCD Astrograph Catalog (UCAC4) Zacharias N., Finch C.T., Girard T.M., Henden A., Bartlett J.L., Monet D.G., Zacharias M.I. [Astron. J. 145, 44 (2013)] ~USNO-B1 = The USNO-B Catalog Monet D.G., Levine S.E., Casian B., et al. [Astron. J., 125, 984 (2003)]~NOMAD = Naval Observatory Merged Astrometric Dataset  Zacharias N. , Monet D.G., Levine S.E. et..al [2004AAS...205.4815Z (ADS)].
Star_Number:UTF8_String::none:Star identifier in Star_Catalog.
Obs_Date:ASCII_Date_YMD::none:Date of the observation.
Mag_A:ASCII_Real:%5.1f:none:Magnitude of the primary component of the pair. This can be fainter than Mag_B
Mag_B:ASCII_Real:%5.1f:none:Magnitude of the secondary component of the pair. This can be brighter than Mag_A

Double star solutions.
PA_Soln_1:ASCII_Real:%5.1f:deg:Position angle of the secondary star - 1st solution.
PA_SD_Soln_1:UTF8_String::deg:Uncertainty in PA_Soln_1.
Sep_Soln_1:ASCII_string::milliarcsec:Separation of the secondary star - 1st solution.  Where the occultation is of one star only of a double star (demonstrated by the light drop being significantly less than expected), the value for the minimum possible separation is given as  >x.x
Sep_SD_Soln_1:UTF8_String::milliarcsec:Uncertainty in Sep_Soln_1.
PA_Soln_2:UTF8_String::deg:Position angle of the secondary star - 2nd solution.
PA_SD_Soln_2:UTF8_String::deg:Uncertainty in PA_Soln_2.
Sep_Soln_2:UTF8_String::milliarcsec:Separation of the secondary star - 2nd solution.
Sep_SD_Soln_2:UTF8_String::milliarcsec:Uncertainty in Sep_Soln_2.
PA_Soln_3:UTF8_String::deg:Position angle of the secondary star - 3rd solution.
PA_SD_Soln_3:UTF8_String::deg:Uncertainty in PA_Soln_3.
Sep_Soln_3:UTF8_String::milliarcsec:Separation of the secondary star - 3rd solution.
Sep_SD_Soln_3:UTF8_String::milliarcsec:Uncertainty in Sep_Soln_3.
PA_Soln_4:UTF8_String::deg:Position angle of the secondary star - 4th solution.
PA_SD_Soln_4:UTF8_String::deg:Uncertainty in PA_Soln_4.
Sep_Soln_4:UTF8_String::milliarcsec:Separation of the secondary star - 4th solution.
Sep_SD_Soln_4:UTF8_String::milliarcsec:Uncertainty in Sep_Soln_4.

Star coordinates.
Star_RA:ASCII_Real:%10.7f:hr:Right Ascension of the star, GCRS coordinates. (That is, coordinates referred to the ICRS reference frame of 2000, proper motion to date).
Star_Dec:ASCII_Real:%11.7f:deg:Declination of the star, GCRS coordinates. (That is, coordinates referred to the ICRS reference frame of 2000, proper motion to date).

Asteroid identification.
Designation:UTF8_String::none:The asteroid number. For planetary satellites, PxxMyy, where xx is the planet number, and mm is the satellite in that system.
Name:UTF8_String::none:Asteroid's name, or other identification.

JDSO info
JDSO_SubmitDate:UTF8_String::none:Date of submission to the JDSO (Journal of Double Star Observations)
JDSO_Reference:UTF8_String::none:Publication reference in the JDSO (Journal of Double Star Observations)
