Declare variables in the RTL as follows:
[var] [DataType] name;
Where:
°var is optional and implied if not in the declaration.
°DataType is one of the following:
-integer_vector_type: bit, logic, or reg
-integer_atom_type: byte, shortint, int, longint, integer, or time
-non_integer_type: shortreal, real, or realtime
-struct
-enum