Discovered by: Solr_Flare
This is a variation of the L Jump.
When performing the L Jump, if you jump at an angle(instead of straight forward, back, or up) you can further increase your distance gained.
An example would be holding up-left when you make your jump, or back-right, etc.
This is caused by something common in many FPS such as Quake. When holding at an angle, you are adding to both your x and y directional components, performing what is commonly called a "strafe jump".