contains some symbols used by library functions that can be redefined by the
user. Since it is not allowed to change a library symbol, the advanced user
may move here the definitions it would like to change in its own code
functional language for computing with geometry
Currently, all libraries are loaded at set-up by the interpreter. All visible symbols, i.e. those listed in this appendix, are protected and cannot be redefined by the user.
It is easy to see when a symbol is protected: (a) it is colored blue by the Xplode editor, and (b) a false value is returned by the interpreter when asking for the evaluation of a redefinition of some protected symbol. The user may easily change this behavior, by either preventing the loading of some libraries, or by loading them as non-protected at set-up, or by loading some needed library on request during the work session. Let remember that the language is not case-sensitive.
contains some symbols used by library functions that can be redefined by the
user. Since it is not allowed to change a library symbol, the advanced user
may move here the definitions it would like to change in its own code