1.1.57 $PACKENUM or $Z : Minimum enumeration type size

This directive tells the compiler the minimum number of bytes it should use when storing enumerated types. It is of the following form:

Where the form with $MINENUMSIZE is for Delphi compatibility. xxx can be one of 1,2 or 4, or NORMAL or DEFAULT.

The default enumeration size depends on the compiler mode:

• In Delphi and TP mode, the size is 1.
• In MacPas mode, the size is 2.
• In all other modes, the default is 4.

As an alternative form one can use {$Z1}, {$Z2}{$Z4}. The {$Z} form takes a boolean argument, where ON is equivalent to {$Z4} and OFF is equivalent to {$Z1}.

So the following code

will use 1 byte to store a variable of type Days, whereas it nomally would use 4 bytes. The above code is equivalent to

or equivalent to