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The meaning of Ripple is in the Glossary of the User Guide. The icon is meant to resemble what it looks like when you toss a rock into a pond.
In English, the one with concentric circles is the “Ripple” button and the one with the star/asterix (*) is “Ripple All Trcks”.
“Ripple” means that if you insert a clip between two other clips the clips to the right of the insert will move to the right to accomodate the new clip, rather than the new clip overwriting what is already in that position. So if your original clips looked like:
`[....clip A...][...clip B...]`
The new layout would look like:
[...clip A...][...new clip...][...clip B...]
Rather than:
[...cl[...new clip...][p B...]
In this context “ripple” means that the clips following the inserted clips
gently ripple, or flow, away from the disturbance caused by the insert.
“Ripple” only affects the track where you are inserting the new clip, unless you have also selected “Ripple All Tracks” - in which case the ripple effect affects all the tracks.
The developers do not make the translations or change them. I doubt all translators frequently visit the forum to look for issues. The developers do not coordinate with translators.