# Pre- and post-files

For this cycle there are 2 pre-files which must be called before this cycle and 2 post-files which are called after each cycle.

These files are optional.

As required, these files can be created as a subroutine.

You can make machine-.specific modifications in this file, such as:

- Extend laser
- Retract laser

There is a general pre file and a general post file which are used for all laser cycles.

- SysMeasLaserPre.nc
- SysMeasLaserPost.nc

These files are only valid for this cycle and consist of the following:

Cyclename +Pre or Post +.nc

- SysMeasLaserToolPre.nc
- SysMeasLaserToolPost.nc