What is the .SFC file extension?

Question

I have a project that has come to me that has .SFC files. I would like to change them to .SFM files.

1. What is the difference between the two file types (if any)?
2. What considerations should I be aware of before making the switch?
3. What is the best method for updating the file extension? (Could I just change the file name and be done with it?)

Answer 1

I've never heard of .SFC files, but .SFM are plain text files that you can open in any text editor. Have you tried to look at the content of the .SFC files that way?

Answer 2

.sfc was an extension used for projects before .sfm became the standard. There should be no problem leaving the extensions as .sfc.

Paratext sets the extension for a project under the Typical File Name of the Advanced tab in the Project Properties. Once a project has been created, you cannot change the extension type from within Paratext.

You can create a new project with the extension set to .sfm and then import the books into the project. In the new project the extensions should now be .sfm.