| type | classifies the reading according to some useful typology.| Status | Optional | | Datatype | teidata.enumerated | | Sample values include: | - substantive
- (substantive) the reading offers a substantive variant.
- orthographic
- (orthographic) the reading differs only orthographically, not in substance, from other readings.
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| cause | classifies the cause for the variant reading, according to any appropriate typology of possible origins.| Status | Optional | | Datatype | teidata.enumerated | | Sample values include: | - homeoteleuton
- homeoarchy
- paleographicConfusion
- haplography
- dittography
- falseEmendation
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| varSeq | (variant sequence) provides a number indicating the position of this reading in a sequence, when there is reason to presume a sequence to the variants. | Status | Optional | | Datatype | teidata.count | | Note | Different variant sequences could be coded with distinct number trails: 1-2-3 for one sequence, 5-6-7 for another. More complex variant sequences, with (for example) multiple branchings from single readings, may be expressed through the join element. |
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| require | points to other readings that are required when adopting the current reading or lemma.| Status | Optional | | Datatype | 1–∞ occurrences of teidata.pointer separated by whitespace |
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