changing doc format and HTML literals

site/doc/pages/gen_float.txt

@@ -8,13 +8,13 @@ index : index position to generate number from
 seed : seed position to generate number from (defaults to 0)
 return value : noise value
 
-:desc
-Generates a noise value between 'from' and 'to', given the 'index' and 'seed' numbers.
-
-
 :see
 >noise
 
-:related
-**PHP:** `random_int()`, `mt_rand()`, and custom numeric random helpers
-**JavaScript / Node.js:** `Math.random()` or `crypto.getRandomValues()`-based helpers for numeric ranges
+:content
+Generates a deterministic noise value between `from` and `to` for the given `index` and `seed`.
+
+## Related Concepts
+
+- PHP: `random_int()`, `mt_rand()`, and custom numeric random helpers
+- JavaScript / Node.js: `Math.random()` or `crypto.getRandomValues()`-based helpers for numeric ranges