//! Module chaincfg defines chain configuration parameters.
//!
//! In addition to the main Decred network, which is intended for the transfer
//! of monetary value, there also exists two currently active standard networks:
//! regression test and testnet (version 0). These networks are incompatible
//! with each other (each sharing a different genesis block) and software should
//! handle errors where input intended for one network is used on an application
//! instance running on a different network.
//!
//! For library packages, chaincfg provides the ability to lookup chain
//! parameters and encoding magics when passed a *Params. Older APIs not updated
//! to the new convention of passing a *Params may lookup the parameters for a
//! wire.DecredNet using ParamsForNet, but be aware that this usage is
//! deprecated and will be removed from chaincfg in the future.
//!
//! For main packages, a (typically global) var may be assigned the address of
//! one of the standard Param vars for use as the application's "active" network.
//! When a network parameter is needed, it may then be looked up through this
//! variable (either directly, or hidden in a library call).
//!
//! If an application does not use one of the standard Decred networks, a new
//! Params struct may be created which defines the parameters for the
//! non-standard network. As a general rule of thumb, all network parameters
//! should be unique to the network, but parameter collisions can still occur.