Hello
When the Buyers guide tells "No file limitation for the IDE" that removes both the 32 files per project limitation and the no sub-projects limitations.
The table on page 10 shows that unlimited IDE comes with the 64K C compiler upgrade. So sub projects are already possible with that package.
The table on Page 10 does not speak about the C Compiler upgrade you are right. With that upgrade, you can develop banked C application (application with more than 64K of code).
I will report to marketing that the buyers guide is not clear enough and that C compiler update is missing in the table.
CrasyCat