z/OS ISPF Dialog Tag Language Guide and Reference
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Rules for variable names

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

Variable names supplied as attribute values on DTL tags must have these characteristics:
  • 1-8 characters in length
  • The first character must be A-Z, a-z, @, #, or $.
  • Remaining characters, if any, can be A-Z, a-z, @, #, $, or 0-9.

Lowercase characters are translated to their uppercase equivalents

Names composed of valid characters that are longer than 8 bytes are truncated to 8 bytes. Names that are not valid are set to blank.

Parent topic: Tag reference

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