Memory Locations have many uses beyond marking points on your Session timeline, and in particular, are a great way to customise different track views that you can jump to quickly.
To create a new Memory Location, choose a number and then do one of two things depending which option you have selected in Numeric Pad Mode in the Operations tab of Pro Tools Preferences. With Transport selected (which is the Default) as your Numeric Pad Mode, type ‘.’ (full stop), then a number, then Enter — again, all on the numeric keypad. Either way, a New Memory Location window will open. Choose None under Time Properties, then give it a Name. In this example by ticking the Pre/Post Roll box, this particular Memory Location will remember that and nothing else. You can also add any comments you want, before finally clicking OK to store the Location.
Now, when I recall Memory Location 7 it changes the pre-roll and post-roll settings to what I had selected. You can recall a Memory Location by typing ‘.’ then the number, then another ‘.’
Alternatively you can select your chosen Memory Location by clicking on it in the Memory Locations window. Note that if you hover the mouse, the Comments info appears in a separate floating box!
There are now up to 999 Memory Locations available, and they can be used for saving settings for all sorts of things including Track Heights, Track Show/Hide combinations and Zoom settings.
So take some time and create some memory location points that do anythng but remember where you are on the timeline.