Accelerator key modifiers
Key modifiers define keyboard control key combinations in accelerator key names.
The accelerator key names such as 
"F10" can be combined with key modifiers, by
using a minus sign (hyphen) as
separator:key-modifier - [ key-modifier - [ key-modifier - ] ] key-name| Key Modifier | Description | 
|---|---|
Control | 
The left or right [Ctrl] key. | 
Shift | 
The left of right [Shift] key. | 
Alt | 
The left or right [Alt] key. | 
For example:
Control-P 
Shift-Alt-F12 
Control-Shift-Alt-Z