(maxima.info)Introduction for Runtime Environment

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32.1 Introduction for Runtime Environment
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'maxima-init.mac' is a file which is loaded automatically when Maxima
starts.  You can use 'maxima-init.mac' to customize your Maxima
environment.  'maxima-init.mac', if it exists, is typically placed in
the directory named by 'maxima_userdir', although it can be in any
directory searched by the function 'file_search'.

   Here is an example 'maxima-init.mac' file:

     setup_autoload ("specfun.mac", ultraspherical, assoc_legendre_p);
     showtime:all;

   In this example, 'setup_autoload' tells Maxima to load the specified
file ('specfun.mac') if any of the functions ('ultraspherical',
'assoc_legendre_p') are called but not yet defined.  Thus you needn't
remember to load the file before calling the functions.

   The statement 'showtime: all' tells Maxima to set the 'showtime'
variable.  The 'maxima-init.mac' file can contain any other assignments
or other Maxima statements.