skew_correction: add documentation

Signed-Off-By:  Eric Callahan <arksine.code@gmail.com>
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Arksine 2019-06-12 20:26:58 -04:00 committed by KevinOConnor
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@ -468,3 +468,17 @@ of retraction required.
parameters.
- `G11`: Unretracts the extruder using the currently configured
parameters.
## Skew Correction
The following commands are available when the "skew_correction" config
section is enabled.
- `GET_CURRENT_SKEW`: Reports the current printer skew for each plane in
both radians and degrees. The skew is calculated based on parameters
provided to the [skew_correction] section of printer.cfg.
- `CALC_MEASURED_SKEW [AC=<ac_length>] [BD=<bd_length>] [AD=<ad_length>]`:
Calculates and reports the skew (in radians and degrees) based on a
measured print. This can be useful for determining the printer's current
skew after correction has been applied. It may also be useful before
correction is applied to determine if skew correction is necessary. See
skew_correction.md for details on skew calibration objects and measurements.