HP 4 FAMILY - Manual (Page 116)

Operation Description
0 Sets the current Font ID to the given String ID. This operation allows
the user to set the current PCL Font ID to a string name, which gives the
user the ability to download fonts to a string name. If the current Font ID
has been set with both the Alphanumeric ID command and the Font ID
command (?*c#D), the ID last sent takes precedence. For example, if the
current font ID was set to 10 and then to “Font1”, the current font ID would
be “Font1”.
1 Associates the current Font ID to the font with the String ID
supplied. This operation finds the font with the supplied String ID and
assigns the current Font ID to that font so that the font now has two names.
The original font name is used to perform font management commands on
the font, and the new associated name is used when selecting the font for
usage. Note that since fonts with string names can be associated to numeric
Font IDs, these fonts are selectable in HP-GL/2 using the numeric Font ID.
2 Selects the font referred to by the String ID as primary. This operation
finds the associated font using the supplied String ID and specifies that font
as the current primary font. The command is ignored if there is no font with
that String ID.
3 Selects the font referred to by the String ID as secondary. This
operation functions the same as the primary font specification (operation
number 2), however this command specifies the font as secondary.
4 Sets the current Macro ID to the String ID. This operation allows the
user to set the current PCL Macro ID to a String ID name. If the current
Macro ID has been set with both the Alphanumeric ID command and the
Macro ID command (?&f#Y), the ID last sent takes precedence. For example,
if the current Macro ID was set to 10 and then to “Macro1”, the current
macro ID would be “Macro1”.
5 Associates the current Macro ID to the supplied String ID. This
operation finds the macro with the supplied String ID and assigns the
current Macro ID to that macro. This macro then has two names. The
original Macro ID name is used to perform macro management commands on
the macro, and the new associated name is used when executing, calling, or
overlaying the macro.
20 Deletes the font association named by the current Font ID. The font
must have been associated with an alphanumeric Font ID (using operation 0).
No String ID is supplied (?&n1W20). This command removes the alphanumeric
font name association, however the disk resource itself is not changed.
2-80 Printer-Specific Differences