Most of the selection commands allow more than one object to be selected at once. To select more than one of a particular object, you can use the Plus, Minus, Thru and Invert operators.
These operators work on most of the selection commands, including:
Use the Plus (+) operator to add additional objects to your selection.
Selects channels 1, 3, 5 and 7.
Selects channels 1 thru 10 and 20 thru 30.
Selects the channels in Group 1 and Group 5.
Use the Minus (-) operator to remove objects from your selection.
Selects channels 1 thru 10, except for channel 5 (or, in other words, channels 1 thru 4 and 6 thru 10).
Selects the channels in Group 1 that are not in Group 3.
Use the Thru (>) operator to add a range of objects to your selection.
Selects channels 1 thru 10.
Selects channels 1 thru 50, except for channels 20 thru 30 (or, in other words, channels 1 thru 19 and 31 thru 50).
Use the Invert (~) operator to invert which objects are selected.
Selects button 3, then turns it’s indicator on, then inverts the selection (selecting all buttons except for button 3), then turns those indicators off.