Note that some limits are immutable, i.e. they cannot be changed without rewriting the interpreter. And some limits can be changed, i.e. it is just a matter of changing the value of the constant in a source file and recompiling the interpreter.

Limit	Value	Can be changed?
Maximum number of parameters for a function	63	No
Maximum number of parameters for a subroutine	63	Maybe up to 127
Maximum number of parameters for an operator	63	No
Maximum level of expression imbrication	255	Yes
Maximum number of syntax patterns in an expression	1023	No
Maximum length of a symbol	255	No
Maximum number of constants in the same class	65536	No
Maximum number of static or dynamic symbols in the same class	2048	No
Maximum number of functions in the same class	2048	No
Maximum number of different classes used in the same class	2048	No
Maximum number of extern declarations in the same class	256	No
Maximum number of events declarations in the same class	254	No
Maximum number of unknown class symbols in the same class	65536	No
Maximum number of array declarations in the same class	32768	No
Maximum number of local variables in a function	127	No
Maximum level of control structures imbrication	32	Yes
Maximum number of dimensions in an array	8	Yes
Maximum level of controls imbrication in a form	32	Yes
Maximum number of possible comparisons in one CASE instruction	32	Yes
Maximum number of breakpoints	255	Yes
Maximum level of class inheritance	16	Yes
Maximum length of an error message	511	Yes
Maximum number of fields in a structure	255	Yes