Texts from old documents and presentations made using StarOffice can be exported and saved as separate text files (.txt) in their respective original programs, or in any successor software that still supports these file types.
Found 2 different conversion types using the same filename extensions.
Conversion sdp to txt type 1:
Convert from OpenOffice.org presentation file to Simple text file.
Microsoft Windows software - convert sdp to txt on Windows
Older multi-platform office productivity suite
File type (from-> to)
Convert from sdp file format
OpenOffice.org presentation file
Simple text file
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned sdp to txt. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Conversion sdp to txt type 2:
Convert from OpenOffice.org presentation file to T602 document file.
Multiplatform software - convert sdp to txt on any platform
A free multi-platform productivity office suite for Windows, Mac and Linux