Add slide link to a placeholder in the current slide.
ph_slidelink( x, type ="body", id =1, id_chr =NULL, ph_label =NULL, slide_index
)
Arguments
x: an rpptx object
type: placeholder type
id: placeholder index (integer) for a duplicated type. This is to be used when a placeholder type is not unique in the layout of the current slide, e.g. two placeholders with type 'body'. To add onto the first, use id = 1 and id = 2 for the second one. Values can be read from slide_summary.
id_chr: deprecated.
ph_label: label associated to the placeholder. Use column ph_label of result returned by slide_summary. If used, type and id are ignored.