[iurl=PAGE]link text[/iurl]
adds a link to the requested static page, whereas PAGE may be:
index - blog root
contact - contact page
page:about or static:about - static page with the given name
post:entry210320-231132 or entry:entry210320-231132 - blog entry with the given ID
(Add comments to create a link to the comments section in the given entry. Example: [iurl=entry:entry210320-231132 comments]link text[/iurl])
cat:2 or category:2 - overview page for the category with the given ID
relative:some/relative/path - given relative path based on your blog's base
URL
[entryurl=entry210213-215343]link text[/entryurl]
adds a link to the entry with the given ID.