CUT (CTRL and X key) – copy the text or data and remove it if possible
You cannot use this option on text which cannot be deleted, so use COPY instead
COPY (CTRL and C key) – copy the text or data but leave it unchanged
You cannot CUT text or data if it is Protected or READ ONLY e.g. A Web Page
If you would like to take a copy then use Edit–> Copy or CTRL+C