I assume by 'outgoing letter' you mean an email? If so, then a copy of the email can be found in the Sent folder, found below Inbox.
copy command is used to make a copy of file or copycon is used to write a file
copy file filecopy
BY create an uncompressed copy of a file I asume you mean make a copy of the compressed file and have the copy be uncompressed. all you need to do is unzip it.
backup
That would be a 'back-up' file - assuming you have one ! A back-up is a copy of something that you can go back to in case something has happened to the original.
backup file
copy and paste
A 'copy' (CC or BCC) notation is used at the end of a letter when a copy of the letter is being sent to one or more other parties.
That would be a 'back-up' file - assuming you have one ! A back-up is a copy of something that you can go back to in case something has happened to the original.
Bbbnnsms
copy command ofcource.. from command prompt.. copy <source file path> <filename> <destination file path> say u want to copy ram.txt from c: to d: copy c:\ram.txt d: and press enter..
That would be a 'back-up' file - assuming you have one ! A back-up is a copy of something that you can go back to in case something has happened to the original.