This is from the sony help file (under help on the header of the vegas window )
What do you want to do?
Add transitions to events
From the View menu, choose Transitions to display the Transitions window.
Select a transition from the list on the left side of the window. The thumbnail images on the right side of the window represent each of the existing presets for the selected transition. Hover your cursor over a preset to see an animated example.
After you've found the setting that you want to use, drag it to the position where you want it to occur on the timeline.
You can drop the transition at either end of an event, between two overlapping events, or between two adjacent events.
The Video Event FX dialog is displayed to allow you to edit the transitions settings, and a is displayed in the timeline to show you where the transition takes place. You can also click this icon to edit the transition's settings.
Add a transition to all selected events
Life has enough tedium. If you tend to use the same transitions often, you can save yourself some time by adding a transition to all selected events in one fell swoop.
Select the events where you want to add the transition.
From the View menu, choose Transitions to display the Transitions window.
Select a transition from the list on the left side of the window. The thumbnail images on the right side of the window represent each of the existing presets for the selected transition. Hover your cursor over a preset to see an animated example.
After you've found the setting that you want to use, drag it to the a transition on one of the selected events. The new transition will replace all existing transitions in the selected events.
The Video Event FX dialog is displayed to allow you to edit the transition's settings, and a is displayed in the timeline to show you where the transition takes place. You can also click this icon to edit the transition's settings.
Dropping on existing cuts, crossfades, or transitions:
If you drop the preset on an existing transition, only transitions within the selection will be changed. Cuts and crossfades are preserved.
If you drop the preset on an existing crossfade, only crossfades and transitions within the selection will be changed. Cuts are preserved.
If you drop the preset on an existing cut, all cuts, crossfades, and transitions within the selection will be changed.
Dropping on event edges:
If you drop the preset on a transition that is at the beginning or end of an event (but does not span two events), only single-event transitions that occur on the same end of the event within the selection will be changed.
If you drop the preset on an event fade-in or -out, event fade-ins/outs and single-event transitions that occur on the same end of the event within the selection will be changed.
If you drop the preset on an event edge with no fade, all other event edges, event fade-ins/outs, and single-event transitions that occur on the same end of the event within the selection will be changed.
To change length of the transition for cuts that are converted to transitions, use the Cut-to-overlap conversion settings on the Editing tab of the Preferences dialog.
Change the speed/duration of a transition
After you've added a transition to an event, you can easily adjust its duration, which will change the speed at which the transition occurs.
Adjusting a transition at the beginning or end of an event
Hover over the edge of the transition until the cursor is displayed as a .
Drag the edge of the transition to set its new length:
Adjusting a transition between two events
Drag either of the events to change the amount of overlap between them. The transition length is updated to match the overlapping area:
Right-click a track header and choose Expand Track Layers from the shortcut menu to reveal the A roll, B roll, and transition roll. In this view, sequential clips alternate between the A and B rolls, and the overlapping area between events is represented by the transition roll.
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Linear Mode
