Usage: It basically has two parts: Text Editor and Importer/Exporter. Within the text editor, you can select a piece of text using your finger, cut or copy it, and paste it to a selected location.
To select a text, press a finger to the place where you want to begin selecting and wait until magnifier appears, move your finger and release when done.
The button named “Menu” opens the import/export menu.
Exporting does not modify the contents of the original content (except for “regular file” case, as it will overwrite the entire contents of the given file). So, you can not change a stored short message, eMail or note. The process for exporting is as following for each type:
Short messages: CopierciN is terminated and SMS application is opened with the latest content of CopierciN is ready-to-be sent. You can chose a receiver within the SMS application. Be aware that CopierciN overwrites the /var/mobile/Library/Preferences/com.apple.mobileSMS.plist file which holds some stuff like unsent messages. So, if you want to keep your unsaved messages, just have a backup of this plist file.
Notes: A new note is added to the notes database. CopierciN does not get terminated during this operation unlike the SMS case.
eMails: Just like the SMS case, CopierciN gets terminated and Mobile Mail application is launched. Again, you can chose the receivers within the Mobile Mail application
Regular Files: The contents of the file at given path is overwritten. Be aware of that and avoid overwriting system files. I would rather open a folder under /var/mobile and save my text files in there.