Community Tip - If community subscription notifications are filling up your inbox you can set up a daily digest and get all your notifications in a single email. X
How do find out the version of isodraw files ?
Open the file in a text editor and go to the end of the file. There will be a "signature". See some examples in the attachment.
Not sure it's 100%, but it works.
Please let me know if you have any other method.