This is documentation for Mathematica 7, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)
Package Bulletproofing
Mathematica makes it easy to "bulletproof" packages, and prevent features of their environment from affecting their internal operation.
Module localize names of variables
Namespace Bulletproofing
BeginPackage isolate names by declaring a separate context for package functions
Begin isolate names in the implementation of a package
    
Symbol Protection
Protect protect a symbol against redefinition
ReadProtected protect against definitions being read
Locked attribute to prevent protection from being changed
    
Evaluation Bulletproofing
Block block out changes to system or other variables
BlockRandom block out reseeding of pseudorandom generators
    
Version Compatibility
$VersionNumber Mathematica version number for comparisons
$SystemID short description of computer system
    
Notebook Interface Bulletproofing
Deploy  ▪ Selectable  ▪ Editable  ▪ Visible  ▪ CellContext
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