Backspace 

Deletes the character before the cursor 

Delete 

Deletes the character following the insertion cursor 

Control+Backspace 

Deletes the previous word 

Shift+Backspace 

Deletes characters from the cursor to the beginning of the line 

Control+Delete 

Deletes all the characters from the cursor to the end of the current line 

Insert 

Toggles Overstrike and Insert mode