Hint directives not explained on the page they're mentioned
"Hint directives" is not explained on several pages into the documentation, there should be at least a link to https://www.freepascal.org/docs-html/ref/refse5.html.
- program: https://www.freepascal.org/docs-html/current/ref/refse112.html#x233-25700016.2
- constants: https://www.freepascal.org/docs-html/ref/refse9.html#x21-200002.1
- variables: https://www.freepascal.org/docs-html/ref/refse22.html#x53-730004.2
- class properties: https://www.freepascal.org/docs-html/ref/refsu33.html#x87-1110006.7.1