details() prints how frame() did its work: the screening mode it
chose, the role assigned to each column, the rules that caused some
pairs to be skipped, and which backend was used.
Details
This is the place to look when an output from print.frame_df() or
relationships() surprises you and you want to know why a particular
pair was or was not screened.
Examples
df <- data.frame(x = 1:30, y = rnorm(30))
details(frame(df))