* sick should use a standard (for INTERCAL values of "standard") grammar
  to parse its (mis)configuration file, say "sickrc.io"
* the (mis)configuration data for optional modules should be installed
  with the modules; at the moment, it's installed by the Base package
* The Bytecode and Splats data contain values which are only used if
  optional modules are installed; it should be possible to remove these
  from the Base package, and update Bytecode and Splats when installing
  options
* regular grimaces (INTERCAL's answer to regular expressions); currently,
  support for regular grimaces is included in the compiler, but the
  module is only partially written. To do pattern matching, one would use
  a regular grimace in a CREATE statement, then try to execute a comment
  to trigger the new grammar production; this is probably quite unlike what
  other languages do. It should be added that it is already possible to do
  pattern matching using pseudo context-free grammars by using the CREATE
  statement without regular grimaces. You didn't really want to know that,
  did you?
* C backend which generates C code to be compiled with your normal C compiler.