Here's a more detailed explanation of each point:

1. • File → Open (Ctrl+O):

- Opens a file from your local computer.

2. Open, close, save and print files

- These menu items allow you to perform basic operations on open TuxGuitar files:

* 'Open' opens an existing song in the current window.

* 'Save' saves all changes made since the last time the document was saved back into a file.

- The default location for saving is under ~/.tuxguitargp2/ (or %APPDATA% on Windows).

You can change this with File → Preferences... → General → Save and Load

* 'Save As' brings up a dialog box where you can choose the name of an existing file or enter one to create a new file.

- This is handy if your current song has been modified without saving, because otherwise all changes will be lost when closing TuxGuitar!

* 'Print...' prints out on paper everything visible in the main window.

3. Other entries

- There are two more predefined templates you can use to create new files from:

+ File → New → Blues Trio: This template creates a song with three empty guitar tracks.

- It's similar to the default one, but now there are three separate channels instead of just one!

+ File → New → Classical Guitar Duo:

* Like 'Blues Trio' except this time you get two guitars instead of three.

4. The menu item

- 'File -> Revert To Default Template'

- This goes back to the default template (one-guitar track).

5. From now on, new songs will be created with your selected template.

* You can change which song is opened when TuxGuitar starts up by going under File->Preferences...->General->Startup.

6. The menu item

- 'File -> New -> New Song'

- (or press Ctrl+N)

7. There are also some keyboard shortcuts available:

- Shift+Alt+S: Save As...

* This is similar to saving a document, but it brings up the dialog box again so you can choose where and what name to save under.

8. The most important functions

- 'File -> Exit'

+ Quit TuxGuitar completely.

'File->Quit' (Alt+F4 on Windows) does essentially the same thing too!

9. File Management

- Many entries in this menu are also found elsewhere within other programs, but there are some specific actions only available here.

10. Edit pulldown menus

* This includes cut/copy/paste functions as well as undo/redo buttons at top left corner 'Edit->Undo' or press Ctrl+Z to go back one step.

* You can also use the 'Clear All' command under this menu item if you want everything erased from memory without closing down completely.

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