>A client was telling me that I need to NULL terminate my strings before importing them into his company's tables. He says that even though I am using ALLTRIM(), that there are still spaces showing up in a TREE object in his software.
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>How do you NULL terminate a string of data?

Gee, tell him that he should do the trimming while adding nodes to tree. If insists on null then add chr(0) after trimming.
Cetin