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 pages

> Napf Island
    Downloads / Operation Arrowhead / Addons / Islands   ||  Tags: Mountain, Napf
> Nabbi Islands
    Downloads / Arma 3 / Addons / Terrain   ||  Tags: Bridge, Forrest, Islands, Mountain, Water

Found in forums

> BAF In Mountain Warfare
    FORUMS / Editing / Mission editing / Arma 2 / Arma 2: Oper...   ||  Tags: Mountain, Warfare