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### The null value
[ Datatype unit-type Funcon null-value Alias null ] Datatype unit-type ::= null-value
/*
The value `null-value` represents a fixed computed value (in contrast to `none`, which represents the absence of a value). */
Alias null = null-value
/*
The value `null-value` represents a fixed computed value (in contrast to `none`, which represents the absence of a value). */