z/OS ISPF Dialog Tag Language Guide and Reference
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ALPHA

z/OS ISPF Dialog Tag Language Guide and Reference
SC19-3620-00

To perform an alphabetic test, specify the check item TYPE attribute as ALPHA. An alpha check limits the characters allowed to A-Z, a-z, #, $, and @.

Here is an example where an alpha check in the authorc variable class ensures that authors' names are alphabetic:
<!doctype dm system>

<varclass name=authorc type='CHAR 40'>
  <checkl msg=liba006>
     <checki type=alpha>
  </checkl>

The conversion utility generates an ISPF alpha verification statement in the )PROC section.

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