User-defined function names.
Node and device names.
By default, starting in release 3.2.4, function names and user-defined function names were made case-insensitive. Starting in release 3.2.15, parameter names were made case-insensitive. Finally, in 3.2.16, the remaining categories were made case-insensitive. Thus, in present releases, all identifiers are case-insensitive. This seems to be the common practise in commercial simulators.
Case sensitivity must be established at program startup and can not be changed during operation. There are two ways to accomplish this: