It is possible to hide or show blocks in your email based on how individual contacts are Tagged. For example, you might send an email out with areas of content that should only been seen by certain types of contact.
You can apply multiple tags to a targeted block. If you apply more than one tag, the block will be shown to a recipient with any of the tags. For example, a Block might be Tagged with Red Wine, White Wine, and Champagne. In this scenario a recipient would see the Block based on the following logic:
Red Wine OR White Wine OR Champagne
When using an audience to target a block, you should review the the logic used to create the block in the Audience Builder.