I have taken a quick look at it using Utopia.
Looks like there are several fake basic files.
The protected basic file "Boot.bas" has a hidden loader built-in.
load "boot.bas" poke & 172,1 - list
call &2ac to load mini office.
1 KEY DEF 66,0,0,0,0
2 MEMORY &5FFF
3 LOAD "BOOTMEN.BIN",&6000
4 OPT%=0
5 CALL &6000,@OPT%
6 OPT%=OPT%+1:IF OPT%>7 THEN 5 ELSE IF OPT%=7 THEN CALL 0
7 ON OPT% GOTO 8,9,10,11,12,13
8 RUN "WORD
9 RUN "DATABASE
10 RUN "SPREAD
11 RUN "GRAPHICS
12 RUN "COMMS
13 RUN "LABEL
14 '"¤ DATABASE SOFTWARE MCMLXXXVI
after poke &172,1
1 CLEAR:SYMBOL AFTER 256:KEY DEF 66,0,0,0,0:|TAPE:CALL &2AC:RUN"a:boot .bas"
1 KEY DEF 66,0,0,0,0
2 MEMORY &5FFF
3 LOAD "BOOTMEN.BIN",&6000
4 OPT%=0
5 CALL &6000,@OPT%
6 OPT%=OPT%+1:IF OPT%>7 THEN 5 ELSE IF OPT%=7 THEN CALL 0
7 ON OPT% GOTO 8,9,10,11,12,13
8 RUN "WORD
9 RUN "DATABASE
10 RUN "SPREAD
11 RUN "GRAPHICS
12 RUN "COMMS
13 RUN "LABEL
14 '"¤ DATABASE SOFTWARE MCMLXXXVI