About the author
Just in case I forget in future, RAD Studio no longer allows editing a type library directly.
What can be done is to use the tlbimp utility, like so:
tlbimp -I filename.tlb
in order to generate a RIDL file, which can then be edited.
The output is to the current directory, so be sure to change to the specified directory, or use -D to set the output directory.
A method to design records so that they're allocated on a specific byte boundary, such as 16 bytes, 512 bytes, 4096 bytes, etc.