|  | /* Package action provides implementations for every Glide command. | 
|  |  | 
|  | This is not a general-purpose library. It is the main flow controller for Glide. | 
|  |  | 
|  | The main glide package acts as a Facade, with this package providing the | 
|  | implementation. This package should know nothing of the command line flags or | 
|  | runtime characteristics. However, this package is allowed to control the flow | 
|  | of the application, including termination. So actions may call `msg.Die()` to | 
|  | immediately stop execution of the program. | 
|  |  | 
|  | In general, actions are not required to function as library functions, nor as | 
|  | concurrency-safe functions. | 
|  | */ | 
|  | package action |