Hide blank ONLY_FOR_ARCHS and NOT_FOR_ARCHS
Hide blank ONLY_FOR_ARCHS and NOT_FOR_ARCHS

Only show ONLY_FOR_ARCHS and NOT_FOR_ARCHS if they are not nil

Untested.
Should consider making this list of parameters a bulleted list or definition list, instead of paragraphs.
FreshPorts/freshports,FreshPorts/freshports,FreshPorts/freshports,FreshPorts/freshports