Selecting items

Any symbol or text block can be selected by clicking on it with the Arrow tool. Once an
item or group of items is selected you can perform various actions on the selected item, altering it,
deleting it, copying it, etc. Selected items have a distinctive appearance:
A selected note-
A selected chord-
A selected text block-
You can select multiple items in any of the three layers, staff symbols, chords, or text.
There are several ways to select more than one item:
The simplest is to click the mouse and hold it down while moving it, creating a gray selection rectangle such as you may already be familiar with from drawing programs. When you release the mouse button, everything within the rectangle will become selected.
For selecting long passages it's better to do a shift-select: click on one side of the passage, then scroll to the other side and click again while holding down the shift key. Everything between the two clicks will become selected.
For selecting several items that are not adjacent, click the first one, then hold down the shift key as you click on the others. Again this is similar to behavior you'll have seen in drawing programs.
To select everything in the currently active layer, press command-A or choose Select All from the Edit Menu. If you are in the chord layer this will select all the chord symbols; if in the text layer it will select all text blocks, and so on.