example_genes           A set of example genes.
geom_gene_arrow         A 'ggplot2' geom to draw genes as arrows
geom_gene_label         A 'ggplot2' geom to add text labels to gene
                        arrows
geom_subgene_arrow      A 'ggplot2' geom to draw subgene segments of
                        gene arrows
geom_subgene_label      A 'ggplot2' geom to add text labels to subgenes
gggenes                 'gggenes': provides a 'ggplot2' geom and helper
                        functions for drawing gene arrow maps.
make_alignment_dummies
                        Prepare dummy data to visually align a single
                        gene across faceted molecules
theme_genes             A 'ggplot2' theme for drawing gene maps
