Some ACAD file extension formats can be opened in binary format only

Can you repeat this sentence, but add in punctuation?
* Some ACAD file extension formats can be opened in binary format only.
Since DBI this means we would have IXDC but IX is the same as X so we have the solution to the equations as XDC

Can you repeat this sentence, but add in punctuation?
Since DB=I this means we would have IX=DC, but IX is the same as X so we have the solution to the equations as X=DC.
In the case that your OB file doesnt open it is highly likely that you do not have the correct software application installed on your PC to view or edit OB file extensions

Can you repeat this sentence, but add in punctuation?
In the case that your OB file doesn't open, it is highly likely that you do not have the correct software application installed on your PC to view or edit OB file extensions.