As of Build 828, you may also return from an SBX routine using a special form of the RETURN statement:

Return(<expression>)

This statement sets the return value of the function if the SBX was called via XFUNC. If the SBX was called via XCALL or VXCALL, then the <expression> is just discarded and the statement acts like the END statement (i.e. returning to the calling BASIC program).

See the subsequent topic  for more details on external functions. This is an A-Shell extension and requires that you compile with the /X:2 switch.