AMT Datasouth PAL - Manual (Page 202)

vmstatus
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vmstatus operator to determine the amount of space necessary to store a given amount of data
within a given printer.
To determine the amount of memory necessary to store a given amount of data, the programmer
should use vmstatus to determine a starting memory usage level. The programmer should then
download a representative sample of the data to the printer, and check the new memory status
using the vmstatus operator.
The PAL operator includes numerous data management optimizations. Therefore, a very small
amount of data may not provide a true representation of memory usage. In general, the progra-
mmer should probably download sufficient data to the printer to create at least a 64,000 byte
change in the value reported by vmstatus.