interface_build {
    {d.what.sites} 0
    {Queries sites map layers on their category values and category labels.}
    {entry map {Sites maps to be queried (name[,name,...]):} 0 +sites}
    {checkbox -1 {Identify just one location.} "" -1}
    {checkbox -q {Run quietly.} "" -q}
    {checkbox -t {Terse output.} "" -t}
}