Microcom 450 - Manual (Page 3)

BS ^H Same as DEL but has another special function.
LF ^J No effect.
VT ^K Print a test label.
FF ^L Print a blank label.
DC3 ^S Instructs the printer to stop sending data.
DC1 ^Q Instructs the printer to continue sending data.
2.2 ^A ACCUMULATOR MODE
The accumulator mode is used in conjunction with the command mode to
load data or control numbers into the printer. See the section on
command mode.
2.3 ^B TEXT ENTRY MODE
The text entry mode is used to load the information to be printed on
the label. Data is sent in strings of printable ASCII characters
separated by carriage returns. The first string entered is text
string one the next is two and so on. Each label format field
specifies a text string number to retrieve the data from.
2.31 PROTECTED TEXT
A text entry starting position can be specified with the ^An^D61
control sequence (Where n is the text string number). This allows
text entry mode to start at a specific text string number. This
feature is useful in protecting fixed text on a label.
2.32 PRE-PADDED TEXT
Text can also be fixed at the beginning of each text string. The text
that is to be fixed is loaded into the text strings by entering text
mode. Then the ^D62 control sequence will start at the current
starting text position and fix the data at the beginning of the text
strings. If no data is entered in a text string before the ^D62
control sequence is executed then no data will be fixed in that
string.