ALIAS : MEXPRALIAS is a top-level command.
Define an alias DEF for the symbol NAME. Works just like the
alias command in the Unix csh. If the value of NAME is *ALL*, all
aliases will be printed; if the value of DEF is the empty string, then
the current alias definition of NAME will be printed. See UNALIAS.
The command format for ALIAS is:
<n>ALIAS NAME DEF
The arguments have the following meaning:
NAME : Name of symbol to alias (*ALL* to print aliases)
DEF : Definition ("" to see current defn.)
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