Some components might produce a very large number of CTEs, and because a CTRACE formatter might be called for each one, consider exploiting the 4-kilobyte work area, or the CTXIUSER and CTXIUSRL fields to anchor storage obtained by the formatters. On the first call, IPCS initializes CTXIUSER and CTXIUSRL to a value of zero. If, on some subsequent call (call n), a formatter updates either of these fields, the updated information appears in the field as input to a formatter on the next call (call n+1). CTRACE frees any storage anchored in CTXIUSER.