Examples

[KevCaz]

Should examples be madatory for keys functions? A good vignette may be sufficient.

[SteveViss]

Not mandatory for now.

[tpoisot]

Aren't they checked by CRAN?They're also easier to look at than vignettes, because they appear directly within the help / documentation. I think they should be highly recommended.

[KevCaz]

Examples and vignettes are indeed checked by CRAN (and locally using R CMD CHECK or the Wickham's flavored R-CMD-CHECK in devtools package). So let's say we HAVE TO provide example.