Palm Pilot

[prosise]

Am working with people who need something like the Palm III (as "prosthetic memory").
Looking to add-ons to make it more accessible, less confusing, more readily re-learned prior to solid acquaintance with it.
What are your favorite add-ons?
Which ones might help a person with cognitive disability (attention/concentration, procedural memory, etc)?
Anybody interested in an ongoing dialogue, on behalf of assembling a suite of add-ons?
Any PalmOS developers reading this?
Thanks!

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JohnB