| label | Extras.Geometry |
| labeling | Standard, Standard.Debug, Standard.Pipes |
| labels | Extras.SnapBlock |
| landmarks | Extras.SimUL1 |
| landscape | Lessons.Penguin |
| last | Standard, Standard.Debug, Standard.Pipes |
| lcm | Standard, Standard.Debug, Standard.Pipes |
| length | Standard, Standard.Debug, Standard.Pipes |
| lettering | Lessons.Logic, Standard, Standard.Debug, Standard.Pipes |
| letteringBlock | Standard, Standard.Debug, Standard.Pipes |
| light | Standard, Standard.Debug, Standard.Pipes |
| lighter | Standard, Standard.Debug, Standard.Pipes |
| lines | Standard, Standard.Debug, Standard.Pipes |
| line_circle | Extras.Geometry |
| line_getx | Extras.Geometry |
| line_gety | Extras.Geometry |
| line_isVertical | Extras.Geometry |
| line_line | Extras.Geometry |
| list | Standard, Standard.Debug, Standard.Pipes |
| listn | Standard, Standard.Debug, Standard.Pipes |
| lJustified | Standard, Standard.Debug, Standard.Pipes |
| log | Standard, Standard.Debug, Standard.Pipes |
| logBase | Standard, Standard.Debug, Standard.Pipes |
| logicalGroupBy | Standard, Standard.Debug, Standard.Pipes |
| lowercase | Standard, Standard.Debug, Standard.Pipes |
| lt | Extras.Turtle |
| luminosity | Standard, Standard.Debug, Standard.Pipes |