Some commands accept an option of the form -sstate to specify a state (see Invoking ci, see Invoking co). For frob (see Invoking rcs), you can also specify a revision. For log (see Invoking rlog), you can specify more than one state (see Delim-separated list).
Exp (for “experimental”) as the default state,
but does not attach any meaning to it or any state you choose.
Other common states are
Rel (for “release”),
Prod (for “production”),
Stable, and so on.
A state should be an
id (“identifier”, see File format grammar).