arg

Value already passed into the function's Context

message

Text error message returned from a function or command
(The name part is the function name and therefore is case insensitive.)

param

Value to be passed into a function or command; cleared automatically after the function call.
(The name part is the function name and therefore is case insensitive.  However, the Element part is the argument name and is case sensitive.  If an argument is passed via the function calling line, BEE will convert all argument names to lowercase.  The param% class provides a way to pass non-lowercase argument name to a function.)

result

Value passed out from a function or command
(The name part is the function name and therefore is case insensitive.)

status

Numeric error code returned from a function or command
(The name part is the function name and therefore is case insensitive.)

systemp

Temporary values used by the system.  (Please do not use this class.)