The CBL_DIR_SCAN library routines were added in Net Express 4.0 and higher so they do not exist in NX 3.1. To scan a directories contents in NX 3.1 you should use the call by number routine X'91' function 69 which is documented here.
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The CBL_DIR_SCAN library routines were added in Net Express 4.0 and higher so they do not exist in NX 3.1. To scan a directories contents in NX 3.1 you should use the call by number routine X'91' function 69 which is documented here.