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Text Objects
A text object is simply a line of printable characters. A text object
is created whenever the LabelWriter receives a printable
character that is not otherwise part of a command. Once it’s
created, a text object will remain active until it is terminated.
While a text object is active, any printable characters sent to the
LabelWriter will be added to that text object. The only exceptions
are printable characters that are sent as part of a command. While
a text object is active, commands that alter text line attributes
(such as font and double-height character commands) are ignored.
Commands that alter text character attributes (such as double
wide and inverse) may be sent at any time, though.
Line attributes include the five basic fonts (ESC S, P, M, U, and
T), plus the double-height font command (GS DC2). These
commands may not be issued while a text object is active; instead
they should be issued before a text object is begun. The font line
attribute persists until another font command is received. The
double-height line attribute persists either until the cancel double
height command (GS DC3) is sent or the current font is changed.
The character attribute commands include the set font to double
wide (SO) and set inverse print mode (GS RS) commands. These
commands may be issued or canceled at any time. Character
attributes persist only until the end of a text object.
A text object can be terminated with a carriage return, a line feed,
or both, in either combination. If the length of the text object
exceeds the space allowed for printing, it will either wrap to the
next line or truncate at the end of the printable area. The decision
to wrap or truncate is determined by the select line wrap/truncate
mode command (GS T). By default, text objects will wrap to the
next line.
Bar Code Objects
A bar code object is created by the print bar code command
(GS k). Specified within the command is the symbology to be
used, the amount of data to be encoded, and the data itself. Other
