reference images into a Word document.
This function is now useless as the processing of images
is automated when using print.rdocx().
docx_reference_img(x, src)an rdocx object
a vector of character containing image filenames.
Other functions for officer extensions:
fortify_location(),
get_reference_value(),
opts_current_table(),
shape_properties_tags(),
str_encode_to_rtf(),
to_html(),
to_pml(),
to_rtf(),
to_wml(),
wml_link_images()