"Beta Basic"... around and around :)

Hello, _All_! I'm talking about the subject! It is known that there are 5 versions of "Beta Basic", namely: 1. "Beta Basic v1.0" 2. "Beta Basic v1.8" 3. "Beta Basic v3.0" 4. "Beta Basic v3.1" 5. "Beta Basic v4.0" (1988, for ZX Spectrum 128). That's what I would like to know about version 5 (version 4.0)! The only thing I know is that this version 4.0 is intended for 128 kilobytes! This brings up the question(s): -Does it exist in the expanses of the former USSR? -Has it changed much compared to 3.1? -Are there any other versions? If anyone / someone has it, then send me some soap, I will be very happy grateful!!! (See literature page 235). p.s. the literature "BASIC dialects for the ZX Spectrum" was used under edited by N. Rodionov and A. Larchenko, ed. "PETER" St. Petersburg, 1992, 331 p. For this, let me take my leave. Best regards, Andrey. What were you going to see there? Glass fabric? And the thought from electrons?