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It is often interesting to execute several times the same sequence
of commands. For example, you make a geometry construction or
you fill certain variables with values before making a computation.
For demonstration purpose, you want to execute each command
separately (and not all at once like with Run file),
but you do not want to enter them again and again.
This is the purpose of Load script in the File menu.
Make a text file with all your commands (e.g. by saving your session),
then run File->Load script, this will enable 2 views, the first one
is the equation writer with your script and its first line selected.
Use the yellow button to select the appropriate second view (for
example geo for a geometric construction).
Now click on the exec button in the mode button bar of the
eqw, this runs this command and move the selection to the next
command.
giac documentation written by Bernard Parisse