Some version of OpenOffice.org supported the old document formats from T602 word processor and could save to it. Nowadays that is not the case and at best you can produce plain text files (.txt) that actually use the same extension as the old T602 documents.
Convert OpenOffice.org text file to T602 document file.
We have found one software suitable in our database for this conversion.
Multiplatform software - convert oot to txt on any platform
A free multi-platform productivity office suite for Windows, Mac and Linux
Convert from oot file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.