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Default Properties

It's also possible to set default property values for objects. When setting default values, the handle must be an ancestor of the object for which you are changing the default property value. This is because the object will inherit the property values from an ancestor.

To set the default values, prepend Default to the property name and use the set command. For example, set(gcf, 'DefaultAxesFontName','helvetica') will make helvetica the font for all future axes which are part of the current figure. set(0, 'DefaultAxesFontName','helvetica') would do the same for all figures subsequently created, because 0 is the handle of the root object - the ancestor of all other objects.

Setting default values can sometimes save much typing.

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Information provided by Tim Love