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1.2.5. More on Entering Commands
A common way to enter CoCoA commands is to first type them into a
text editor, then cut-and-paste into the CoCoA window.  For one, this
saves a lot of retyping in the case of syntax errors.  In addition,
one may save a sequence of commands in a file and read them into a
CoCoA session with the 'Source' command (or equivalently, with '<<').
For instance, if a sequence of CoCoA commands is saved in the file
'MySession', one may enter

  << 'MySession';

to run the commands (give the full pathname, or store your file in the
cocoa directory).  User-defined functions are often stored in files
and sourced in this way.