Description
Add a circa marker to supplied historical-date wording.
Digital editions separate source readings, editorial uncertainty, witness locators, image requests, identifiers and rights statements. XML character/attribute rules differ from display labels, while URI fragments and TEI pointers need their target-document context. An identifier key or formatted token does not authenticate a witness, validate an edition or authorize reuse.
Add a circa marker to supplied historical-date wording.
When to use this tool
Use Historical Date Circa Qualifier Token when you already have dateText, circa and need to add a circa marker to supplied historical-date wording.
How to use the tool and how it works
- Enter dateText, circa. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read qualifiedDate. Use the output convention below.
Require dateText nonempty; prefix c. only when circa=true.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| dateText | Date Text | Required. Text; minimum UTF-16 length 1; maximum UTF-16 length 8192. |
| circa | Circa | Required. Boolean. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| qualifiedDate | Qualified Date | Required. Text; maximum UTF-16 length 8192. |
{
"input": {
"dateText": "1900",
"circa": true
},
"output": {
"qualifiedDate": "c. 1900"
}
}Limitations and assumptions
- The date is not parsed or converted, and circa is not assigned a numeric uncertainty interval or historical meaning beyond the supplied flag.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
Alternative or Complementary methods
Validate the complete XML/TEI document or IIIF request when technical conformance matters, and inspect the original witness and rights record for editorial use. Preserve uncertain readings, source order and attribution rather than treating local tokens as verified scholarly interpretations.
References
Similar or alternative tools
- End Of Month Unknown Day Mask
Format a supplied civil month with either a validated day or an unknown-day mask.
- Historical Gazetteer As Of Key
Qualify a historical place identifier by authority and a supplied as-of date.