The value of this object type identifies an entry in the
smLangTable which is used to execute this script.
The special value 0 may be used by hard-wired scripts
that can not be modified and that are executed by
internal functions.
Set requests to change this object are invalid if the
value of smScriptOperStatus is `enabled' or `compiling'
and will result in an inconsistentValue error.
Note that the data type and the range of this object must
be consistent with the definition of smLangIndex.