st_truchet_boutique     Flexible Truchet tiles
st_truchet_dissolve     Dissolving the boundaries of individual tiles
                        in Truchet mosaics
st_truchet_flex         Flexible Truchet tiles
st_truchet_fm           Mosaics with flexible Truchet tiles
st_truchet_l            Truchet tiles made with polygons
st_truchet_ms           Truchet mosaics
st_truchet_p            Truchet tiles made with polygons
st_truchet_ss           Truchet mosaics
