H-5. BEFORE SUBCOMMAND
This subcommand allows the operator to insert a block of text before the current line. This is
the only subcommand that allows the operator to add lines of text in front of line 1 of a previous-
ly composed message.
a. The process is terminated by pressing the HLT key. The line pointer remains at the
b. Lines are entered until the desired block has been entered. The BEFORE subcommand
provides no prompt sequence.
c. Pressing the HLT key indicates that the desired text has been created. The subcommand
is terminated and a prompt indicator (*) is printed.
d. The message is inserted line by line. Each line is entered into the memory when a
carriage-return is entered, or if the line reaches the current line length. A carriage-return is added
to the line.
e. A non-empty line, terminated by pressing the HLT key, adds a carriage-return to the line,
inserts the line into the message, and terminates the BEFORE subcommand.
f. A n empty line, terminated by pressing the HLT key, terminates the subcommand.
If there is not sufficient memory available to insert the input line, error
message No. 3 is printed. The line is not inserted into the message. The
subcommand is terminated.
g. Blank lines are inserted into the memory as a SPACE code, followed by a CR code.