more docs on DIST and STOP

docs/control/tech/README.md

@@ -436,6 +436,7 @@ The above global metadata can be extracted with this [**demo web tool**](../meta
 * **CBAR** H9-13: enable a small 75% saturated color bars for video tools evaluation. Most cameras limit overlays to 4K30, 2.7Kp60 or lower. Input Data: 1 to enable, 0 to disable
 * **DAMP** H10-13: Control over the auto-exposure damping. Setting the DAMP to 1 is the default, setting to 10 would slow the camera’s exposure adjustments 10X.Input Data: 0.1 to 10000. e.g. `$DAMP=10`
 * **DAUD** H10-13: Disable Audio in video captures, all MP4 files will have no audio track. Application: high bit-rate drones video.Input Data: 1 to disable audio, 0 to re-enable
+* **DIST** H13: Time-Lapse Video Distance, x is a GPS travel distance between exposures in meters, rather than time for an in-camera computed timelapse. So $DIST=5 will set a 5 meter interval for TLV. One exception is when x=1, 10 meters will be used, 1 meter is too noisy (GPS errors.) So this feature is good for 2 meters of larger. For shorter distances or a higher speed, you the new TLV sample rate for 4Hz (p4), for the best distance precision. e.g. mTr5Xp4$DIST=5
 * **DIVE** H12-13: Optimizing the Hypersmooth stabilization for underwater. It might be no surprise, but HyperSmooth is designed for the camera operation above the water's surface, underwater there is typically less camera shake, and HS is still 70% effective at removing shake. The hack adapts HS to use the refractive index (RI) of water (defaults to 1.335, good for fresh and command salt water), to remove closer to 100% of unwanted shake. Note: if you know your area's RI is significantly different, use DIVE=r, where r can be 1.3 to 1.45 is supported.
 * **DLRV** H10-11: Disable LRV file creation. Application: high bit-rate drones video. Input Data: 1 to disable LRVs, 0 to re-enable
 * **DSPC** Labs text display contrast:  Set the background opacity for Labs text on the LCD. Input Data: Number from 0-transparent to 6-completely opaque.
@@ -480,6 +481,7 @@ The above global metadata can be extracted with this [**demo web tool**](../meta
 * **SHMX** H8-9 & MAX: Photo shutter maximum exposure time: this is similar Maximum Shutter Angle (EXPT), except it applies to Photos. e.g. SHMX=1000 would set 1/1000th of a second as the longest shutter time. Input Data: 30-2000.
 * **SOLO** H9-13: Use only one channel of audio. e.g. `$SOLO=1` use only channel 1, `$SOLO=4` use only channel 4.Input Data: 0-4, the value is a channel number.
 * **SPED** SD Card Speed Test. Data rates should have minimums above 120Mb/s is you want to reliably capture the high bitrate modes.Input Data: 1-9, number of times to run the test.
+* **STOP** A Stop Motion extension where is STOP=x the number for frames to store per shutter press. This modify timelapse video. It is recommend to make a stop motion preset with this command ```mT$PRES="0,STOP"mTr5Xp4``` Works great with the remote. Mode button ends capture. 
 * **SYNC** H9-11: GPS time/timecode sync. With a good GPS signal, the camera’s internal clock will be precisely updated to the millisecond. It will not update the hour or date, preserving your current timezone offset. Input Data: 1-enable, 0-disable. Permanent required.
 * **TCAL** H9-13: Timecode CALibration, help to increase the precision of setting timecode via QR Code. The milliseconds can be positive or negative as needed.
 * **TONE** H10-13: Tone-mapping controls. Input Data:   0 - current defaults   1 - global tone-mapping only   2 - both tone-mapping   3 - disable all tone-mapping