calc: Multiple Calculators
4.10 Multiple Calculators
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It is possible to have any number of Calc mode buffers at once. Usually
this is done by executing ‘M-x another-calc’, which is similar to ‘C-x *
c’ except that if a ‘*Calculator*’ buffer already exists, a new,
independent one with a name of the form ‘*Calculator*<N>’ is created.
You can also use the command ‘calc-mode’ to put any buffer into
Calculator mode, but this would ordinarily never be done.
The ‘q’ (‘calc-quit’) command does not destroy a Calculator buffer;
it only closes its window. Use ‘M-x kill-buffer’ to destroy a
Calculator buffer.
Each Calculator buffer keeps its own stack, undo list, and mode
settings such as precision, angular mode, and display formats. In Emacs
terms, variables such as ‘calc-stack’ are buffer-local variables. The
global default values of these variables are used only when a new
Calculator buffer is created. The ‘calc-quit’ command saves the stack
and mode settings of the buffer being quit as the new defaults.
There is only one trail buffer, ‘*Calc Trail*’, used by all
Calculator buffers.
Info Catalog
calc: Error Messages
calc: Introduction
calc: Troubleshooting Commands