With a straight line L you program a straight traverse motion in any direction.
Application
Description of function

The control moves the tool in a straight line from its current position to the defined end point. The starting point is the end point of the preceding NC block.
Depending on the kinematics of your machine, you can program up to six axes in a linear L block.
Programming a straight line L
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Example
7 L X+10 Y+40 RL F200 M3 |
8 L IX+20 IY-15 |
9 L X+60 IY-10 |