SAIL is an ALGOL style language with additions for AI research.  The
manual is AIM-289; the online version is SAIL.JFR[AIM,DOC].
Please do not SPOOL the online version--it is nearly 300 pages long!
Use E and αβXF αβP.

An XGP version of recent additions to the SAIL manual is in SAIL.XGP[DOC,AIL].

There exists a package to simplify IO and to provide some nice MACROs for
SAIL programs.  Documentaion is in IOSAIL.BTH[UP,DOC].