Quote Above the video and photo clips In the timeline, when you select, a thin green line appears.
Does anyone know what it indicates? Thank you and goodbye.

It's a timeline marker. It allows you to very accurately mark a part of the timeline for a number of reasons. You can place the green line exactly where you want the timeline marker, and then right click on your clip and select 'Add Timeline marker'. A text box appears to allow you to make a note relative to your marker. A blue marker line will then be present on your timeline, and hovering over it will display the text that you entered. The marker also creates a snap to line if needed.

Hi TDK1044
I thank you for the answer. I did some tests but I did not achieve any results.
Perhaps reading the manual I will be easier to understand.
You could indicate to me in which page the topic is treated.
Thank you, I greet you. W 10 64 , pc Dell XPS 8000 - core i7 2,8 GHz--ram 6 MB--GEFORCE GTX 1050TI 4GB - SSD 256 + 2x630--area Pal
Videocam: Panasonic SD 700 avchd
Pinnacle 14 - PD 9-13-17

Quote Hi TDK1044
I thank you for the answer. I did some tests but I did not achieve any results.
Perhaps reading the manual I will be easier to understand.
You could indicate to me in which page the topic is treated.
Thank you, I greet you.

Hi, check this video out........

https://www.youtube.com/watch?v=RyCsddPfLQ8&t=172s

To better understand my question, I enclose this screenshot.
Athin green line appears on the timeline at the top of the clip,
superimposed on the black line that did not exist in previous versions.
I think if it were inserted, it should have a function that I can not find. W 10 64 , pc Dell XPS 8000 - core i7 2,8 GHz--ram 6 MB--GEFORCE GTX 1050TI 4GB - SSD 256 + 2x630--area Pal
Videocam: Panasonic SD 700 avchd
Pinnacle 14 - PD 9-13-17

Quote To better understand my question, I enclose this screenshot.
Athin green line appears on the timeline at the top of the clip,
superimposed on the black line that did not exist in previous versions.
I think if it were inserted, it should have a function that I can not find.

Hi,
It is the opacity rubber band. In PDR17 it functions the same way as the audio rubber band. Press the ctrl key to activate the keyframe function.

Cheers
PowerDirector Moderator.

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Very interesting. Now it's all clear. Thank you W 10 64 , pc Dell XPS 8000 - core i7 2,8 GHz--ram 6 MB--GEFORCE GTX 1050TI 4GB - SSD 256 + 2x630--area Pal
Videocam: Panasonic SD 700 avchd
Pinnacle 14 - PD 9-13-17