SQLPLUS edit and format tips

set long 500 longchunksize 500

list - print all rows
change - c /old/new
del - del 4 will delete 4th line
input - input order by 2 will append line as last line
APPEND - Adds specified text to the end of the current line in the buffer 
#############Col and Report format################
ttitle -   center  'Redo Log Summary'  skip 2
col group#     format 999      heading     'Group' 
col member     format a45      heading     'Member'     justify c
col status     format a10      heading     'Status'     justify c
col archived   format a10      heading     'Archived' 
col fsize      format 99       heading     'Size(MB)'