SOS | = S = | source of all good bits

source n.

[very common] In reference to software, `source' is invariably shorthand for `source code', the preferred human-readable and human-modifiable form of the program. This is as opposed to object code, the derived binary executable form of a program. This shorthand readily takes derivative forms; one may speak of "the sources of a system" or of "having source".

SOS | = S = | source of all good bits