Several comma-separated tags will be considered as logical AND between them. You can also use semicolon for logical OR. AND has a priority over OR and you cannot use parentheses for logical grouping. Asterisk (*) within a tag will be regarded as a mask for "any string".

Found in forums

> trouble with if and boolean value
    FORUMS / Editing / Scripting / Arma 3   ||  Tags: Else, If, Nil
> Problem with an disguise script
    FORUMS / Editing / Scripting / Arma 3   ||  Tags: 3, Arma, Disguise, Else, If, Scripting, Then