diff --git a/doc/classes/RandomNumberGenerator.xml b/doc/classes/RandomNumberGenerator.xml
index 6c645468256..33727be0acf 100644
--- a/doc/classes/RandomNumberGenerator.xml
+++ b/doc/classes/RandomNumberGenerator.xml
@@ -4,7 +4,15 @@
 		A class for generating pseudo-random numbers.
 	</brief_description>
 	<description>
-		RandomNumberGenerator is a class for generating pseudo-random numbers. It currently uses PCG32. The underlying algorithm is an implementation detail. As a result, it should not be depended upon for reproducible random streams across Godot versions.
+		RandomNumberGenerator is a class for generating pseudo-random numbers. It currently uses [url=http://www.pcg-random.org/]PCG32[/url].
+		[b]Note:[/b] The underlying algorithm is an implementation detail. As a result, it should not be depended upon for reproducible random streams across Godot versions.
+		To generate a random float number (within a given range) based on a time-dependant seed:
+		[codeblock]
+		var rng = RandomNumberGenerator.new()
+		func _ready():
+		    rng.randomize()
+		    var my_random_number = rng.randf_range(-10.0, 10.0)
+		[/codeblock]
 	</description>
 	<tutorials>
 	</tutorials>