Answer Posted / ali ahsan

Temporary Buffers

dd( or followed by a number ndd) will cut the lines specified by n starting from current line and these lines will be stored into the temporary buffer until new lines are being cut
yy( or followed by a number nyy) will copy the lines specified by n starting from current line and these lines will be stored into the temporary buffer until new lines are being copied

p or P is used to use lines being stored in buffer

Lettered Buffers

There are 26 lettered buffers (a-z). Contents of a lettered buffer are saved until you copy or delete more characters into the same lettered buffer, or until you quit your current vi session.

eg.
From Command Mode

"anyy Copy (yank) n lines into buffer letter "a"
"ap Put contents of lettered buffer a below the
current line

and following command will not overridde a lettered buffer

bnyy Copy (yank) n lines into buffer letter "b"
"bp Put contents of lettered buffer a below the
current line

what is the command used to append to buffer?

2074

HOW WE CAN MAKE THE DLIEVERY WHICH IS BLOCKED DUE TO CREDIT LIMIT.

2372