This is a list of design decisions that still need to be made.

What needs to be done about V2 (login mode) that affects the V1 file
definition?

The 'change' and 'delete' verbs should be easy to implement, but the 'add' verb
requires that a new ID number be created.  There are a couple of ways to do
this: (1) require the ID be given, (2) search for a free number (may be
expensive, simultaneous update problems), (3) a 'control' record that holds
the next available ID number.  In cases 2 and 3, I think a block of a hundred
thousand or so IDs should be set aside for this, either high or low, defined by
build.c.  Something simple like ID 0 would be the place to hold this block
start/next free number.

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