Complete extraction of all 97 commands in HP 3457A Operating.pdf
Chapter 4, expanded to 120 JSON entries (F10-F58 modeled as 24
independent commands rather than one parameterized command). Each
entry includes description, syntax, structured parameters, important
points, worked examples, and tier/rationale classification to guide
which commands a Python control library actually needs.
Documents several findings not obvious from the manual alone: the
output buffer's single-reading data-loss behavior and the correct
burst-acquisition pattern, the CR/LF bus-hold gotcha, the Front Panel
checkbox's unreliability, the isolation-link mechanism behind F10-F58's
speed, and memory/timing capacity math for burst captures.
Updates README.md (was empty) and cmdformat.txt to document the
schema and key findings.
