This is called semicolon, which is a table pause symbol between a period and a comma. Used to separate similar or similar foods or events, usually in a dialogue or action, including several events, but they are in a parallel relationship without affiliation.

For example: in our entertainment center, everyone can sing KTV；; Play billiards; Swimming; Fitness; ..... and so on.

This means that you can do all the above things out of order. For that entertainment center, each item is neither important nor secondary.

That's basically what it means. Understand?