DigiDesign Pro Tools 8.0 Reference Manual page 742

Region Time Stamps
When a region is created, it is time stamped rel-
ative to the SMPTE start time specified for the
session. This Original Time Stamp is perma-
nently stored with the region and cannot be
changed. If a region is ever moved, it can easily
be placed at its original position from the Spot
dialog.
When the Original Time Stamp for a region is
initially set, this same location is also used to de-
fine the region's User Time Stamp.
Unlike the Original Time Stamp, the User Time
Stamp can be redefined with the Time Stamp
command in the Region List menu (see "Time
Stamping" on page 1031).
Time Stamps in DigiBase
Columns are provided in DigiBase browsers for
both the Original and User Time Stamps.
Time Stamps and Matches
Regions with identical User Time Stamps appear
together in the Matches submenu in the Right-
click menu when auditioning takes (see "Select-
ing Alternate Takes on a Track" on page 383).
724 Pro Tools Reference Guide
Sliding Regions in Grid Mode
Grid mode provides several useful capabilities
for sliding and moving regions in track playlists.
This mode is especially useful for lining up re-
gions at precise intervals, as when working with
a session that is bar- and beat-based. Grid
boundaries, depending on the Main Time Scale,
can be based on frames, bar and beat values,
minutes or seconds, or a number of samples.
Grid mode also provides two operational modes,
Absolute and Relative. These modes control how
the Grid is applied (see "Absolute and Relative
Grid Mode" on page 725).
To temporarily suspend Grid mode and
switch to Slip mode while dragging a region,
hold down the Control key (Windows) or
Command key (Mac).
Setting Up the Grid
When the Draw Grid in Edit Window option is
enabled in the Display Preferences page, vertical
Grid lines appear in the Edit window.
Grid lines in the Edit window can also be en-
abled and disabled by clicking the Timebase
ruler name after it becomes highlighted.