Redmine

Hi!
I read through all the documentation for wiki syntax, but I can find how to add link in to a image. No matter what combination I used, they just don't work together.
I can create link or external link without any problem and I can add images without any problem. But if I want a image link, they don't work.

Could someone give me a hint. And if you can point me to more detail documentation about Redmine wiki syntax, that would be great.

By the way, can Redmine wiki use any video?

Thanks.

Eric