formatting for parameters in encounter

content/millennium/r4/base/management/encounter.md

@@ -98,17 +98,17 @@ _Implementation Notes_
 
 ### Parameters
 
-Name          | Required                                                     | Type          | Description
---------------|--------------------------------------------------------------------------------|---------------|---------------------------------------------------------------------------------------------------
- `_id`        | This or `patient` or `subject` or `account` or `identifier` or `pageContext`   | [`token`]     | The logical resource ID associated with the encounter. Example: `7891`
-`patient`     | This or `subject` or `account` or `_id` or `identifier` or `pageContext`       | [`reference`] | The patient present at the encounter. Example: `12345`
-`subject`     | This or `patient` or `account` or `_id` or `identifier` or `pageContext`       | [`reference`] | The patient present at the encounter. Example: `subject=Patient/12345` or `subject:Patient=12345`
-`account`     | This or `patient` or `subject` or `_id` or `identifier` or `pageContext`       | [`reference`] | The account associated with the encounters. Example: `F703726`
-`identifier`  | This or `patient` or `subject` or `account` or `_id` or `pageContext`          | [`token`]     | An encounter's identifier. Example: `urn:oid:1.2.243.58|110219457`
-`date`        | No                                                                             | [`dateTime`]  | Datetime range into which the encounter's period datetime falls. Must be prefixed by 'ge', 'gt', 'le' or 'lt'.
-[`_count`]    | No                                                                             | [`number`]    | The maximum number of results to return.
-`status`      | No                                                                             | [`token`]     | The status of the encounter. Example: `planned`
-`_revinclude` | No                                                                             | [`token`]     | Provenance resource entries to be returned as part of the bundle. Example: `_revinclude=Provenance:target`
+Name          | Required         | Type          | Description
+--------------|------------------|---------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ `_id`        | Conditional      | [`token`]     | The logical resource ID associated with the Encounter. This parameter is required if `patient` or `subject` or `account` or `identifier` or `pageContext` is not used. Example: `7891`
+`patient`     | Conditional      | [`reference`] | The patient present at the Encounter. This parameter is required if `subject` or `account` or `_id` or `identifier` or `pageContext`  is not used. Example: `12345`
+`subject`     | Conditional      | [`reference`] | The patient present at the Encounter. This parameter is required if `patient` or `account` or `_id` or `identifier` or `pageContext` is not used. Example: `subject=Patient/12345` or `subject:Patient=12345`
+`account`     | Conditional      | [`reference`] | The account associated with the Encounters. This parameter is required if `patient` or `subject` or `_id` or `identifier` or `pageContext` is not used. Example: `F703726`
+`identifier`  | Conditional      | [`token`]     | An Encounter's identifier. This parameter is required if `patient` or `subject` or `account` or `_id` or `pageContext` is not used. Example: `urn:oid:1.2.243.58|110219457`
+`date`        | No               | [`dateTime`]  | Datetime range into which the Encounter's period datetime falls. Must be prefixed by 'ge', 'gt', 'le' or 'lt'.
+[`_count`]    | No               | [`number`]    | The maximum number of results to return.
+`status`      | No               | [`token`]     | The status of the Encounter. Example: `planned`
+`_revinclude` | No               | [`token`]     | Provenance resource entries to be returned as part of the bundle. Example: `_revinclude=Provenance:target`
 
 Notes: