INMEMO.SBR is released on tape with a numeric extension which represents your serial number. To use the file as a subroutine, you must first copy or rename it to have an SBR extension:
.COPY INMEMO.SBR=INMEMO.xxx ('xxx' is your serial number)
If you plan to use BasicPlus, you may also want to make a copy with an XBR extension, although there is now a compile switch (/S) which tells BasicPlus to expect SBR extensions on subroutines instead of XBR extensions. (Consult your BasicPlus documentation for more details.)
Once you have renamed INMEMO, you may want to copy it to the BAS: and/or BP: accounts, so it can be loaded dynamically at run time. However, we strongly advise against this for reasons of performance. INMEMO.SBR is over 40 blocks long, which will cause a noticeable delay if fetched from disk every time you need it. It is much more efficient to load it in system or user memory, in which case it can be loaded directly from the INMEMO: account.