Use Delimiters Wisely

[% if add_header with title='Hello World' { fill site/header; for item in menu fill menu/item; } %] --EOF--
look inside...
Thus Spake Andy:

Just because TT3 allows you to chain things together indefinitely doesn't mean it's always a good idea. Treat it like a spoken language where a small amount of punctuation should be used to clarify your meaning.