Contents:
Plot function
Setting variables the variables to be set: engine(compulsory), id_col, theme and warnings
Register plot
Customization options
VCF tools
Scatterplot creation
plot()
get_engine()
get_id_col()
get_theme()
get_warnings()
set_engine()
set_id_col()
set_theme()
set_warnings()
register_plot()
print_options()
reset_options()
set_options()
read_vcf()
split_fields()
make_scatter()