Eigenschap:Dummy element contribution value

This is a property of type String.

The allowed values for this property are:

+/-
---
--
-
0
+
++
+++

Beperkingsschema

{"type": "PROPERTY_CONSTRAINT_SCHEMA",
-
"constraints": {"type_constraint": "_txt",
-
"allowed_values": ["+/-",
"---",
"--",
"-",
"0",
"+",
"++",
"+++"
]
}
}