Version 1.1.0 of PAWS has instructions for how to use the PC-PATR grammar it produces with FieldWorks Language Explorer (aka FLEx). To see the instructions:

  1. Download and install version 1.1.0 of PAWS
  2. On the Contents page, check “Output the PC-PATR grammar file and test example files.”
  3. See item 1 under “Setting up a parser:”

Please note that the tool used to interact with FLEx only runs on Windows 64-bit machines. You can still use PAWS on any of the platforms to produce the PC-PATR grammar, though.

The tool that interacts with FLEx can be found at https://github.com/sillsdev/pcpatrflex.