[stringtemplate-interest] Broken link: StringTemplate 3.0 Printable Documentation/Conditionally Included Subtemplates (IF statements)

[Stefan Eder]

Hi,

there is a broken link ("Conditionally Included Subtemplates (IF 
statements)") within the "StringTemplate 3.0 Printable Documentation".
And within the online documentation I have not found the the answer on 
my question:
Which expressions are supported in IF/ELIF statements?
Can I compare an attribute with a constant?
- If so, what kind of constants are supported (strings, integers, ...)?
-- If so, how to express them?
- If so, what kind of operators are supported (EQUAL, NOT_EQUAL, 
LESSTHAN, ...)?
- If so, how to express them?
Are boolean operators (OR, NOT, PAREN, ...) supported?
- If so, how to express them?

Are answers on my questions online available?

Thanks,
Stefan