JKL 搓擦JKL Scrubbing

JKL 搓擦（JKL Scrubbing）是用 J、K、L 三键控制播放的导航手法——三键的排列正好对应查看器走带控制（Transport Controls）上的倒放、停止、正放。

• 三键分工：J 倒放、K 停止、L 正放——手指放在键盘中心区，全程不用挪。
• 连按加速：L 或 J 每多按一次速度翻一倍，最高 64 倍速，几分钟的素材几秒扫完。
• K 组合精修：按住 K 再按住 L 或 J，半速搓擦细听台词；按住 K 逐下点按 L/J，逐帧步进（Jog）。
• 处处通用：源查看器和时间线查看器都认这套键——找镜头和查剪点是同一套手法。

JKL scrubbing is a navigation technique built on three keys: J, K and L — their layout mirrors the Play Reverse, Stop and Play buttons on the viewer's transport controls.

• One job per key: J plays in reverse, K stops, L plays forward — your fingers never leave the home area.
• Tap again to go faster: each extra tap of L or J doubles the shuttle speed, up to 64x, so minutes of footage fly by in seconds.
• K combos for precision: hold K and hold L or J to scrub at half speed and hear the dialogue; hold K and tap L/J to jog one frame at a time.
• Works everywhere: the source viewer and the timeline viewer both obey these keys — finding shots and checking cuts use the same hand moves.