Finally, we have come to the end of the road for the Trim tool. Sadly, it has nothing to do with the fun backyard game. And, realistically speaking, these tools likely won't be commonly used in your repertoire of editing weapons. But, they both have a time and a place. Much like rolling, both slipping and sliding allow you to fix the timing of clips without affecting the timing of your overall project.
The Slip tool allows you to easily use a different portion of your clip than you originally selected. Let's take an easy example. You had a clip that was exactly 10 seconds in length, but only edited the portion 02:00 to 04:00 into your project. Later, you decide you wished you had actually used a different 2-second range of the clip, perhaps 05:00 to 07:00. Slipping lets you do this easily without disrupting the rest of your project.
The Slide tool is the least used, but has its moments. It allows you to re-time when a clip starts in your timeline...