The package is an unofficial alternative to the package
provided with the Asymptote distribution, for including
pictures within a LaTeX source file. While it does not
duplicate all the features of the official package, this
package is more user-friendly in several ways. Most notably,
Asymptote errors are repackaged as LaTeX errors, making
debugging less of a pain. It also has a more robust mechanism
for identifying unchanged pictures that need not be recompiled.