Functions in this synopsis are organized into the following categories:

• Basic: Application-handling, arithmetic, equality and conditional, error-handling, function-handling, list manipulation, string-handling, and symbol-handling functions
• Utility: Conversion, device access, display control, file-handling, geometric, query and command, and user input functions
• Selection Set, Object, and Symbol Table: Extended data-handling, object-handling, selection set manipulation, and symbol table-handling functions
• Memory Management
• Visual LISP Extensions to AutoLISP: Collection manipulation, curve measurement, data conversion, dictionary-handling, object-handling, and property-handling functions
• Reactor
• VLX Namespace: Function exposure, document namespace variable access, and error-handling functions
• Namespace Communication: Blackboard-addressing and multi-document loading functions
• Windows Registry Handling

Note that programmable dialog box functions are listed in the Programmable Dialog Box Function Synopsis section of this manual.

Functions are grouped by data type and by the action they perform. Detailed information on each Visual LISP^® function is provided in the alphabetical listings in the AutoLISP Reference.

Note that any functions not described here or in other parts of the documentation are not officially supported and are subject to change in future releases.