Edit mode:
a -> from the start position a cursor character input
A -> from the end of the line where the cursor begins entry
i -> from a position before the start character entry cursor
I -> From the beginning of the line where the cursor start entry
o -> next line the cursor jumps to the first line to start entry
O -> Skip the cursor on the start line of the first rows of entry
Block selection mode: ctrl + v (batch operation)
a -> from the start position a cursor character input
A -> from the end of the line where the cursor begins entry
i -> from a position before the start character entry cursor
I -> From the beginning of the line where the cursor start entry
o -> next line the cursor jumps to the first line to start entry
O -> Skip the cursor on the start line of the first rows of entry