Submit a new or modified feature for a manuscript or manuscript page
| featureID | feature id to modify. if not provided, a new feature will be created. |
| docID | manuscript id of the feature, e.g., 10046 |
| pageID | page id of the feature, e.g., 10 |
| featureCode | type of this feature |
| prose | author's prose regarding this feature |
| regionBox | location on page for this feature. left+upper+right+lower, e.g., 0+0+20+20 |
| stringVal1 | specialized field data relative to the specific feature code |
| stringVal2 | specialized field data relative to the specific feature code |
| intVal1 | specialized field data relative to the specific feature code |
| intVal2 | specialized field data relative to the specific feature code |
| dateVal1 | specialized field data relative to the specific feature code |
| dateVal2 | specialized field data relative to the specific feature code |