In vignettes/interplot-vignette.Rmd, plots included in the manuscript do not include any axes labels raising concerns about the user friendliness of the implementation.
Here are the sample codes that need to add axes labels:
interplot(m = m_cyl, var1 = "cyl", var2 = "wt")
interplot(m = m_cyl, var1 = "wt", var2 = "cyl")
interplot(m = m_cyl, var1 = "wt", var2 = "cyl", ci = .9, point = T)