[comp.lang.apl] What do I get for $150 upgrade fee for STSC APL ?

wei@tiger.UUCP (06/17/87)

I am currently using STSC APL*PLUS/PC v.5.0, in which the size of
one array is limited to 64K and the dimension is limited to 32K.
I found out that the upgrade fee is $150+$8(shipping & Handling).
I am wondering what I will get for $158. (e.g. new manual as in the
case of MS C complier). Besides the limit of the array size and
dimension, what other goodies are in the new version ?
Thanks in advance.
HP Wei              tiger!princeton!wei       (UUCP)