Syntax: @?exist | Returns OK if an object or exists, or Error if it doesn't. A common error is to write this as @?exists with an 's'. At least I used to do this a lot in my early days. So remember @?exist and not a letter more. -Abstract
| Attributes | Values |
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| rdfs:label |
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| rdfs:comment |
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| dcterms:subject | |
| abstract |
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