The following physical limitations exist for functions:
Total number of required arguments is less than 255
Total number of keyword/optional arguments is less than 255
Total number of local variables in a let is less than 255
Max number of arguments a function can receive is less than 32KB
Max size of code vector is less than 32KB
The limitation on the size of the code vector is new. In the past, there was no limit on the size
of a SKILL function. Code vectors are limited to functions that can compile to less than 32KB
words. This translates roughly into a limit of 20000 lines of SKILL code per function. The
maximum number of arguments limit of 32KB is mostly applicable in the case when functions
are defined to take an @rest argument or in the case of apply called on an argument list
longer than 32KB elements.