Provides functions for the calibration of radiocarbon dates, as well as options to calculate different radiocarbon-related timescales (cal BP, cal BC/AD, C14 age, F14C, pMC, D14C) and estimating the effects of contamination or local reservoir offsets (Reimer and Reimer 2001 <doi:10.1017/S0033822200038339>). Supporting publication: Blaauw, M., Reimer, P.J., 2026. An open-source toolkit for radiocarbon dating and calibration. Radiocarbon <doi:10.1017/RDC.2026.10221>. The methods follow long-established recommendations such as Stuiver and Polach (1977) <doi:10.1017/S0033822200003672> and Reimer et al. (2004) <doi:10.1017/S0033822200033154>. This package uses the calibration curves from the data package 'rintcal'.

Gene annotation of rice (Oryza Sativa L.spp.japonica).
    The package is based on the annotation file from the website <http://plants.ensembl.org/Oryza_sativa/Info/Index>. 
    Input gene's name then return some information, including the from position, the end position, 
    the position type and the chromosome number.

Convert one biological ID to another of rice (Oryza sativa).
    Rice(Oryza sativa) has more than one form gene ID for the genome. 
    The two main gene ID for rice genome are  the RAP (The Rice Annotation Project, <https://rapdb.dna.affrc.go.jp/>, 
    and the MSU(The Rice Genome Annotation Project, <http://rice.plantbiology.msu.edu/>.
    All RAP rice gene IDs are of the form Os##g####### as explained on the website <https://rapdb.dna.affrc.go.jp/>.
    All MSU rice gene IDs are of the form LOC_Os##g##### as explained on the website <http://rice.plantbiology.msu.edu/analyses_nomenclature.shtml>.
    All SYMBOL rice gene IDs are the unique name on the NCBI(National Center for Biotechnology Information, <https://www.ncbi.nlm.nih.gov/>.
    The TRANSCRIPTID, is the transcript id of rice, are of the form Os##t#######.
    The researchers usually need to converter between various IDs. Such as converter RAP to SYMBOLS for function searching on NCBI.
    There are a lot of websites with the function for converting RAP to MSU or MSU to RA, such as 'ID Converter' <https://rapdb.dna.affrc.go.jp/tools/converter>.
    But it is difficult to convert super multiple IDs on these websites.
    The package can convert all IDs between the three IDs (RAP, MSU and SYMBOL) regardless of the number.