Use the -C option for any command that requires a comment. If you do not specify the -C option, VSS requests a comment for each item specified on the command line. If you do specify the option, all items receive the same comment.
The following table lists ways to use the -C option.
| Option | Description |
| -C | All items receive the same comment. |
| -C- | No comment is used. |
| -Ctext | Uses the string text as the comment for all items. |
| -C@File.txt | Uses the contents of File.txt as the comment for all items. |
| -C? | Returns to the VSS default; requests a comment for each individual file. |
To set any of the options listed in the table as the default for the Check Out command, use the Checkout Comment variable in SS.INI. If you have set a default in SS.INI, you can replace it for a particular command with the option -C?. VSS then asks for a comment for each individual file (the VSS default).
You can set the Comment_Editor variable in SS.INI to invoke an executable editor of your choice as an alternative to the prompt-driven method of entering comments that VSS uses.