Merge pull request #56 from nnecla/updating-parameters-guide

updating the parameters guide

Author: AlexicaWright

documentation/workspace-params.adoc

@@ -11,7 +11,14 @@ You can read more about parameters https://neo4j.com/docs/cypher-manual/current/
 
 === Setting and Managing Parameters
 
-Parameters are set and managed in Query using the `:param` command. 
+Parameters can be created and managed either via the parameters sidebar or by invoking the `:param` command in a Cypher editor.
+
+The Parameters sidebar provides dedicated UI inputs for most of the neo4j https://neo4j.com/docs/cypher-manual/current/values-and-types/property-structural-constructed/#property-types[property types].
+There are a few exceptions such as the https://neo4j.com/docs/cypher-manual/current/values-and-types/spatial/#spatial-values-point-type[Point] type and the setting of https://neo4j.com/docs/cypher-manual/current/values-and-types/property-structural-constructed/#constructed-types[constructed types].
+To support the setting of these types via the UI, there is also a special option of `evaluated` in the type dropdown.
+This allows you to express any parameter type as you would using the right-hand part of the command syntax inlinecode:++:param pointParam => Point({x:1, y:1})++[], in this example `Point({x:1, y:1})` as the value to be evaluated.
+
+For types that are not supported by the UI, or indeed if you prefer working with commands, the `:param` command provides the ability to set and manage parameters.
 The following arguments are supported:
 
 * inlinecode:++:param list++[] or inlinecode:++:param++[] - Lists all parameters