Source Notes

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Source Notes

[About Strings (AutoLISP)](https://help.autodesk.com/cloudhelp/2024/ESP/AutoCAD-AutoLISP/files/GUID-D7C33A49-9715-4E9B-9D8A-4C2E7BFC0FE5.htm)
[LISPSYS](https://help.autodesk.com/cloudhelp/2026/ENU/AutoCAD-Core/files/GUID-1853092D-6E6D-4A06-8956-AD2C3DF203A3.htm)
[ascii (AutoLISP)](https://help.autodesk.com/cloudhelp/2026/KOR/AutoCAD-LT-AutoLISP-Reference/files/GUID-03E1B586-72CB-4AB6-A151-B581AE530318.htm)
[vl-string-search (AutoLISP)](https://help.autodesk.com/cloudhelp/2026/PLK/AutoCAD-LT-AutoLISP-Reference/files/GUID-4E7AE1DA-1ED5-4D96-A7D3-34241AA94AA6.htm)
[read-char (AutoLISP)](https://help.autodesk.com/cloudhelp/2024/KOR/AutoCAD-AutoLISP-Reference/files/GUID-7E94BD14-F018-47D0-88DA-2B08DE32DB2C.htm)
[open (AutoLISP)](https://help.autodesk.com/cloudhelp/2026/PLK/AutoCAD-LT-AutoLISP-Reference/files/GUID-089A323F-21FF-4337-99A9-375758E23BA4.htm)
[read + write text files (BricsCAD)](https://developer.bricsys.com/bricscad/help/en_US/V25/DevRef/source/readwritetextfiles.htm)
Status: documented for major behavioral shift and observable effects; internal representation remains under-specified.