We sometimes need to keep multiple values somewhere. And it is not possible or not needed to create an entity for this purpuse.
For example we need to iterate days of weeks in loop. Of course there may be other ways. But it wil be easy if we have an listvariable or array variable in which we can put multiple string values or integer values.
And it we should be able to iterate this values in a loop.
Variable values {Monday, Tuesday, ...}