The iMarkup functions include support for voice annotations. When text annotations are not enough to get an idea across, use your voice! Simply add your annotations by speaking "into the markups". When sharing markups the recipient can now hear, instead of just read, your ideas associated with the content.

To add a voice annotation to any markup, simply right click on the markup, and select the "Attachments->Add Voice Annotation..." menu item. To listen to a voice annotation, click on the speaker icon that is associated with the markup.