8.6

Example
Say you print 19,000 pages containing a pattern, every day. You may think you'll "run out of
patterns" after a single day. But if 18,900 of these documents are being written to and
processed within the day, at the end of the day you only have a 100 page difference, possibly
due to mistakes, lost pages, or errors during processing. In this specific example, you would run
out of patterns only after 10 days, assuming the numbers remained completely static. Since
there are easy ways to deal with these remainders (a simple automated process that, once a
day, closes any document that is older than 48 hours, for example), a correct implementation
like this one would be perfectly functional and not be affected by the 20,000 page limit.
Remember however that this means that 19,000 physical sheets of paper are printed every day,
and those 19,000 documents are written on using one or more Anoto Digital Pens, which are
then processed back into the system.
The example above actually uses numbers that are much higher than our typical PlanetPress
Capture user. That is to say, a vast majority of our users will never have to worry about reaching
the pattern limitation, unless their implementation is missing important parts, such as the
"cleanup" process. But this also means a smaller minority of our users may require more than
20,000 patterns, so let's deal with this now.
Extending
There are actually 2 ways of dealing with extending the number of patterns using the currently
available tools, each with its own advantages and disadvantages.
Using separate PReS Workflow servers and licenses.
In a scenario where there are multiple locations that use PlanetPress Capture and where
neither pen nor paper has any risk of being moved from one location to another, the easiest (but
costlier) solution is to have a separate installation of PReS Workflow in each location. Each
installation would be responsible for its own documents and pens. The limitation here is that it
would not be directly possible to send a page with an existing pattern to another location (either
via email in PDF or via courier), sign it there and send it back - this would cause errors that
would be hard to prevent and correct. In this scenario however, it's possible to centralize the
activation of pen licenses to one server, while keeping the pattern generation systems
separate.
Using Pattern Sequences
In the event where a single location generates all the patterns and this output *can* be split into
multiple logical zones, Pattern Sequences can be used. A Pattern Sequence is basically a
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