ue.01ad
Retrieves a value from an attribute of an item.
Syntax
u01ad file.name item-id attribute.ref code.number
Description
retrieves a value from an attribute of an item in a file.
The next line of the PROC specifies the file information.
'file.name' is the name of the file. If file.name is prefixed with an asterisk (*), the DICT portion of the file will be accessed.
'item.name' is the item name.
'attribute.ref' is the attribute name (or number)
'code.number' is:
a = Outputs to alternative output buffer.
p = Outputs to Primary input buffer.
s = Outputs to current output buffer.
t = Outputs to terminal.
v = Verifies that the file exists
va= Verifies that the attribute exists.
This function allows 'indirect' references to values from the input and output buffers by using the following special symbols:
'%' indicates the current input buffer value.
'#' indicates the current output buffer value.
Example
Example of direct reference:
pq
u01ad control-file co.name 1 s
xcan't find co.name or control-file
Reads attribute 1 of the item called 'co.name' in the file called
'control-file' and places it in the current output buffer.
Example of indirect reference:
pq
u01ad %2 %3 %4 p
xsomething went wrong...
d0
Reads the attribute number as defined in the fourth location of the input
buffer, using the item-id from the third location and the filename from the
second location.
See Also
User Comments
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