http://hl7.org/fhir/StructureDefinition/questionnaire-sliderStepValue|4.0.1

For slider-based controls, indicates the step size to use when toggling the control up or down.
NameFlagsCardTypeDescription & Constraints
Extension
0..1Increment value for slider
 
extension
?..0
 
url
?..?
 
value[x] *
1..?
 
 
valueInteger *
1..?integer