D: External Function Libraries
AmigaOS provides the following external function libraries for ARexx:
| Library Name | Description | Entry Point |
| amigaguide.library [1] | On-line help functions | -30 |
| locale.library [2] | System localization functions | -30 |
| rexxsupport.library | Memory, message port, and filesystem related functions | -30 |
Before use, libraries must be opened with the ADDLIB function.