BAIL is a debugging aid for SAIL programs. In many respects BAIL is like DDT or RAID, except that BAIL is oriented towards SAIL and knows about SAIL data types, stack structure, and procedure implementation. To use BAIL, specify /27B on the binary term when compiling. Examples: .R SAIL or .COM FOO.SAI(27B,) *FOO/27B←FOO.SAI Further documentation is on BAIL.DOC[DOC,AIL] and BAIL.UPD[DOC,AIL].