$PROBLEM

Identifies the start of a NONMEM Problem Specification.

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$PROBLEM  [string]
;# Example
$PROB  THEOPHYLLINE   POPULATION DATA

Discussion

The $PROBLEM record identifies the start of a NONMEM problem specification. The string becomes a heading for the NONMEM printout. This record is required. If the problem is part of a superproblem, $SUPER must precede the $PROBLEM record. If $SIZES is present, it must precede the first $SUPER or $PROBLEM record. Otherwise, the first NM- TRAN control record must be a $PROBLEM record. A $PROBLEM record other than the first one marks the beginning of another problem specification.

The string must be contained on a single record, and only the first 72 characters of string (starting with the second character after the record name) are used in the heading. Spaces and semicolons in the string are included as is.