The mention of "TI exclusive" is less common in the context of software like FontLab Studio. Texas Instruments (TI) is known for its work in semiconductors and related technologies. If there's a specific partnership or technology from TI that's being utilized or referenced here, it might imply some unique functionality or optimization for TI-related hardware. However, without more context, it's challenging to provide a detailed explanation.

If you're looking to apply a patch to FontLab Studio 8.4.3.8984:

Patches for software are usually released to address bugs, security vulnerabilities, or to add compatibility with new operating systems or hardware. A patch for x86 and x64 architectures would ensure that FontLab Studio 8.4.3.8984 runs smoothly on both 32-bit (x86) and 64-bit (x64) versions of Windows operating systems.