There are no tools associated with scripts. Scripts are typed in this window and then compiled and run. Find these on the button bar is for loading system scripts. The first button is for loading system scripts into the current script window. System scripts are scripts that are associated with buttons, tools, and menus that are part of Arcview or one of its extensions.
Load textfiles using the second button.
These textfiles could be scripts that you wrote for another project and want to use in a new project or scripts that were written by another user. The third button is for saving scripts as text files for use in other projects. Before working with at the Resizing script, look at the System scripts that are available. Select one of the scripts that were associated with the buttons you looked at above, View. Use the HELP facility to look at the ZoomIn request.