User's Manual

⎟ 47
ID filter command descriptions
CONTAINS command
Syntax: CONTAINS <string> [AT <number>]
The CONTAINS constraint searches the ID code for the specified string.
 If the string is not found, then the ID filter does not alter the ID code.
 If a string is specified without a number, then the string can appear
anywhere in the ID code.
 If both a string and a number are specified, then the string must appear
at the <number> character in the ID code. The first character in the ID
code is number 1.
LENGTH command
Syntax: LENGTH <number>
The LENGTH constraint checks the length of the ID code.
 If it does not match the number specified, this line of the ID filter is not
used. The SelfCheck system tries the next filter in the list.
 Note that because the LENGTH restriction may be anywhere in the
script, the ID code may be partly processed before the length is checked.
ADD command
Syntax: ADD <string> [AT <number>] or
ADD CHECKDIGIT [AT <number>]
The ADD action adds a string to the ID code.
 If a number is not specified, the string or check digit is added to the end
of the ID code.
 If a number is specified, the string or check digit is inserted at the
<number> character in the ID code. The first character in the ID code is
always number 1.
CHECKDIGIT parameter
If the CHECKDIGIT keyword is specified instead of a string, the SelfCheck
system sums the digits in the ID code and adds a check digit.
PAD command
Syntax: PAD <direction> WITH <string> TO <number>
The PAD action adds a string to the beginning or end of the ID code.
 Use LEFT to add the text before the ID code, or RIGHT to add it after the
ID code.
 Use TO <number> to specify the total number of characters in the string
after padding.
Example: To convert 1234567 to 000001234567, use
pad left with "0" to 12