Unprotect

Unprotect[s1,s2,]
removes the attribute Protected for the symbols .

Unprotect["form1","form2",]
unprotects all symbols whose names textually match any of the .

DetailsDetails

  • A typical sequence in adding your own rules for builtin functions is Unprotect[f];definition;Protect[f].
Introduced in 1988
(1.0)