specifies the number of the line you want to insert, replace,
or delete.
*
specifies you want to replace or delete the line at the location
pointed to by the line pointer in the system. You can use the TOP,
BOTTOM, UP, DOWN, and FIND subcommands to change the line pointer
without modifying the data set you are editing.
string
specifies the sequence of characters you want to either insert
into the data set or to replace an existing line. If this operand
is omitted and a line exists at the specified location, the existing
line is deleted. When the first character of string is a tab, no
delimiter is required between this operand and the preceding operand.
Only a single delimiter is recognized by the system. If you enter
more than one delimiter, all except the first are considered to be
input data.