At 22:24 -0500 on 08/06/2012, Dale R. Smith wrote about Re: Using
NOTE and POINT simulation macros on CMS?:
The first sentence under the NOTE Macro in the MVS/XA Reference
contains this info:
The NOTE macro instruction causes the system to return the
position of the last block read from or written into a data set.
All input and output operations using the same data control
block must be tested for completion before the NOTE macro
instruction is issued.
So it sounds like the NOTE Macro will only work after a Read or a
Write has been done to the dastaset, not after an OPEN Macro.
If the system knows where the first record in the file is so that the
first READ done after the OPEN will read it, it seems to me that a
NOTE done prior to that READ but just after the OPEN should return
the location of that first record.
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