The following table provides a summary of the AutoLISP Express Tools initialization file and registry functions.
| Initialization file and registry functions | Platforms | |||||
|---|---|---|---|---|---|---|
| Windows | Mac OS | Web | ||||
| Function | Description | AutoCAD | AutoCAD LT | AutoCAD | AutoCAD LT | AutoCAD | 
| Retrieves data from an INI file | ✓ | -- | -- | -- | -- | |
| Writes data to an INI file | ✓ | -- | -- | -- | -- | |
| Deletes a key or value from the Registry | ✓ | -- | -- | -- | -- | |
| Returns a value from the Registry | ✓ | -- | -- | -- | -- | |
| Returns the AutoCAD Windows registry path in the HKLM (HKEY_LOCAL_MACHINE) | ✓ | -- | -- | -- | -- | |
| (Obsolete) Returns the current product key from the Registry | ✓ | -- | -- | -- | -- | |
| Writes a Registry key or value | ✓ | -- | -- | -- | -- | |
| Returns the AutoCAD Windows registry path | ✓ | -- | -- | -- | -- | |