Creating an STL Format Subtitle File
An easy and flexible way to create subtitle files is to use the STL format developed by
Spruce Technologies. The STL format allows you to configure most subtitle settings, and
change the settings on a subtitle by subtitle basis. It supports both the single file method
and the graphics file method, and even allows you to use both methods in the same file.
STL format files can be saved as either plain text files or as RTF files (as created with
TextEdit). You must use RTF files if your text contains Unicode characters.