calc: Working Message
7.4.8 Working Messages
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Since the Calculator is written entirely in Emacs Lisp, which is not
designed for heavy numerical work, many operations are quite slow. The
Calculator normally displays the message ‘Working...’ in the echo area
during any command that may be slow. In addition, iterative operations
such as square roots and trigonometric functions display the
intermediate result at each step. Both of these types of messages can
be disabled if you find them distracting.
Type ‘m w’ (‘calc-working’) with a numeric prefix of 0 to disable all
“working” messages. Use a numeric prefix of 1 to enable only the plain
‘Working...’ message. Use a numeric prefix of 2 to see intermediate
results as well. With no numeric prefix this displays the current mode.
While it may seem that the “working” messages will slow Calc down
considerably, experiments have shown that their impact is actually quite
small. But if your terminal is slow you may find that it helps to turn
the messages off.
Info Catalog
calc: Automatic Recomputation
calc: Calculation Modes