Provides `Machine`, which executes programs and outputs postings.

address of an account.

list of portions.

either ALL or a SPECIFIC number.

name of an asset.

(asset, []{amount, account}).

[asset number].

64bit unsigned integer.

rational number between 0 and 1 both inclusive.

string.

Address represents an address in the machine's resources, which include constants (literals) and variables passed to the program.