pkg go/constant, func Val(Value) interface{}
pkg go/token, func IsExported(string) bool
pkg go/token, func IsIdentifier(string) bool
pkg go/token, func IsKeyword(string) bool
pkg go/types, func CheckExpr(*token.FileSet, *Package, token.Pos, ast.Expr, *Info) error
pkg log, func Writer() io.Writer
pkg log/syslog (netbsd-arm64-cgo), const LOG_ALERT = 1
pkg log/syslog (netbsd-arm64-cgo), const LOG_ALERT Priority

pkg archive/zip, type FileHeader struct, UncompressedSize //deprecated
pkg compress/flate, type ReadError //deprecated
pkg compress/flate, type WriteError //deprecated
pkg crypto/rc4, method (*Cipher) Reset //deprecated
pkg crypto/tls, const VersionSSL30 //deprecated
pkg crypto/tls, method (*Config) BuildNameToCertificate //deprecated
pkg crypto/tls, type Config struct, NameToCertificate //deprecated

<li>
A "for" statement with <a href="#For_range">"range" clause</a> may iterate over
integer values from zero to an upper limit.
</li>
</ul>

<h3 id="Type_unification_rules">Type unification rules</h3>

<p>
The type unification rules describe if and how two types unify.
The precise details are relevant for Go implementations,
affect the specifics of error messages (such as whether