This lets you create a new SGF. You will be prompted for some basic game information (white player, black player, board size, komi, and handicap).
This will open a stored SGF file into the current window. qGo will remember which directory you store your SGFs in and return there next time you perform the Open, Save, or Save As functions during the same session. The file does not have to have an .sgf extension as long as it is in the SGF format (sometimes downloaded files are saved without the extension).
This will save the SGF you are currently editing. If the SGF has not yet been saved to a file, you will be prompted for a filename. If you want to save an existing file under another name or in another location, use the Save As option.
This will let you define which location and name the SGF file will be saved under. Use this to save edited, or alternate copies of SGFs without overwriting the original.
Sometimes (especially in text-based forums) you will see a Go board diagram in ASCII text. qGo can import this ASCII diagram into SGF format, making it much easier to view/edit/store. Save or cut and paste the ASCII diagram you want to import into a file. Then select File - Import ASCII - and you will be prompted for the filename. To [re]define various ASCII marks for the import function, see Settings - Preferences - Import. qGo defaults to the standard format. The position will be added as brother or son of the current node - this can be set in the preferences dialog.
qGo can also export an SGF position into ASCII format. Simply load the position you want to export and then select File - Export ASCII. This opens a window to show you what the exported ASCII file will look like. You can 'Close' window or 'Save' the displayed ASCII position (you will be prompted for a filename). Note that the currently displayed position, not the entire SGF file, is saved in ASCII format. The characters to display the position can be altered in the preferences dialog.
You can export the current board position to an image file. Simply load the position you want to save and select File - Export Image. You will be prompted for a filename to save the image under. Note that this does not produce a screenshot; it produces an image of the board position only. qGo supports common image formats like png, gif, jpeg, bmp. You can the exported file to alter in common graphic suits like Gimp or CorelDraw.
If you want to create a graphic of only a limited board position, zoom the board and navigate to the position you want to display.