When you generate a COBOL program for z/OS® batch or IMS™ BMP, the useXctlForTransfer build descriptor option indicates whether to use an XCTL command as the default implementation for the transfer to program statement. This option is only used if your target runtime environment is z/OS batch or IMS BMP.
Regardless of the value you specify for the useXctlForTransfer build descriptor option, you can control the implementation for a specific transfer to program statement by using a linkage options part. Specifically, you can indicate the implementation by using the transferToProgram element of the linkage options part, and the linkType property of that element. For more information, see the topics for the transferToProgram element and linkType property.
Use of XCTL results in slower performance than use of a dynamic COBOL call.
See also the topics "transfer" and "Using linkage options parts in a call or transfer" in the EGL Language Reference.