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RSET Statement Details
 
Syntax
  RSET stringvariable=stringexpression
 
The stringvariable is usually a random-access file field defined in a FIELD
statement, although it can be any string variable. The stringexpression is
the value assigned to the variable.
  ■ If stringexpression requires fewer bytes than were defined for
    stringvariable in the FIELD statement, the RSET statement right-justifies
    the string in the field (LSET left-justifies the string). Spaces are used
    to pad the extra positions.
  ■ If the string is too long for the field, both LSET and RSET truncate
    characters from the right. Numeric values must be converted to strings
    before they are justified with the RSET or LSET statements.
 
The RSET statement can be used with string variables unrelated to FIELD
statements. When used with a fixed-length string variable, the value is
right-justified and left-padded with blanks.
 
When RSET is used with a variable-length string, the string is treated
as a fixed field. The length of the field is the length of the value
the variable had before the RSET statement.