You can use this tags in content:

[title] Content title [/title] - you can use this several times on one page
[text] Content [/text] - use this for all text's content
[pagelink= page-name ;] Text of link to another page [/link]
[urllink= http://address ;] Text of link to another website [/link]
[pagebutton= page-name ;] Text of button to another page [/button]
[urlbutton= http://address ;] Text of button to another website [/button]
[last-modified] - this put date of last modification on current page
[img= path-to-image ;]
[img-left= path-to-image ;] - image positioned to the left
[img-right= path-to-image ;] - image positioned to the right
[center] any content [/center] - centered content
[right] content [/right] - align to right
[gallery] gallery_name [/gallery] - print gallery on the page (only one gallery should be on singel page)
[tip= description ;] content [/tip] - hover tip
[br] - new line
[script] path-to-file [/script] - insert external script
[left-panel] content [/panel] - left panel inside the page
[right-panel] content [/panel] - right panel inside the page

HTML tags are allowed too.

[page]
  [element]
    [info] Element description [/info]
    [src] http://element-source-address [/src] - address to an element
    [thumb] http://element-thumbnail-address [/thumb] - address to graphics image
  [/element]
[/page]

You can put as many [page][/page]'s as you want and as many [element][/element]'s as you want in every page.