Since MacLayers spends most of its time in toolbox drawing calls, you may still experience a performance improvement. MacLayers has no explicit support for foreign languages. We don't know much about this stuff, and have little use for it ourselves. However, given that 1.35 is now 8-bit clean with respect to characters and supports the use of alternate fonts, we hope that foreign users can design fonts and keyboard mappings that will alleviate most problems. First, determine whether your platform is supported.
Most compilation errors reflect problems in the local environment and are beyond our control.
If your platform is not supported, and you are interested and capable of porting it, by all means, please do so and send us the diffs. We don't mind hearing from parties interested in porting layers to new platforms, or fixing or updating the existing ports, but we can't offer much help to users of unsupported platforms in the meantime. Look in your Control Panels folder for a Powerbook control panel that allows you to configure your modem to act like a built-in serial port. MacLayers is free software.