Scripts can be edited either by doing one of the following:
–Edit them from outside Pirana.
–In the Scripts tab, click 
in the toolbar.
–Right-click the script in the Scripts tab and choose Edit Script from the menu.
Any changes made to the script will be saved permanently. You can choose to save the changes in the script that was originally supplied with Pirana, or save them to your own user library.
Note that when you install a new version of Pirana over the old one, any R script you have in the Pirana installation folder will be overwritten with the one supplied by the new version of Pirana (if you have not given the R-script another name).
