Xerox Printer 用户手册

下载
页码 181
HOST FORMS DESCRIPTION LANGUAGE
down, you only have to change the initial values.  You can shift
text automatically when you add or delete text items.
HFDL uses spaces to delimit keywords.  Therefore, relative
coordinates must not contain spaces between the variable name
Y1 and the value +.5.
Figure 3–25 shows the variable syntax flow.
Figure 3–25.
Relative coordinate syntax
 
 
  
 
+
 
n
identifier
 n
Parameters
identifier is the variable name you specify for the relative
coordinate.
+ or  specifies a positive or negative value that you can apply
to the 
n value.
Default
None. 
Examples
The following examples show the long form of the relative
coordinate variables. 
In this example, you can define the Y coordinate as the value of
Y1 plus 3 centimeters:
AT Y1+3 CM
In this example, you can define the Y coordinate as the value of
Y2 minus 4.5 grid units:
AT Y2–4.5
There is no short form.
In the examples above, the value of Y1 and Y2 change.  When
you refer to Y1 in the FSL, it is 3 larger.  Likewise, Y2 is 4.5
smaller.
COMMENT command
Use the COMMENT command to retain a record of your
comments in the source statement.  Comments do not appear
on the form, and the compiler ignores them.  You do not need
to enclose the COMMENT command text in single quotes.
Figure 3–26 shows the COMMENT command syntax flow.
Figure 3–26.
COMMENT command syntax
;
COMMENT
text
Parameter
text specifies the comment text string you want to include in the
HFDL command statement.
Default
None.
3–34
HOST FORMS DESCRIPTION LANGUAGE 3.2 FOR IBM MVS CREATING FORMS