# Constants
FromArgsUsage is a partial usage message that applications calling FromArgs may wish to include in their -help output.
# Structs
Config specifies the configuration for loading a whole program from Go source code.
PackageInfo holds the ASTs and facts derived by the type-checker for a single package.
A PkgSpec specifies a non-importable package to be created by Load.
A Program is a Go program loaded from source as specified by a Config.