PcloudAmbienceStimBuff: Updated to use postrin percentage

docs/design/intrin-thresholds.md

@@ -12,10 +12,16 @@ importance classifications.
 ## Interest Threshold Parameters
 
 **Synonyms:**
+- `postrin-interest-percentage`
+- `postrin-interest-pc`
 - `postrin-interest-threshold`
+- `postrin-interest-th` (abbreviation for `-threshold`)
 - `interest-threshold`
 - `postrin-interest`
+- `negtrin-interest-percentage`
+- `negtrin-interest-pc`
 - `negtrin-interest-threshold`
+- `negtrin-interest-th` (abbreviation for `-threshold`)
 - `negtrin-interest`
 
 **Description:**
@@ -27,8 +33,9 @@ postrinInd/negtrinInd with the "importance" argument set to "INTERESTING".
 **Specification:**
 - The parameter is specified as part of the `quale-iface-api-params`
   in the DAP specification
-- The value is a numeric threshold that determines when stencils are
-  constructed and delivered with INTERESTING importance
+- Parameters with the `-percentage` or `-pc` suffix are interpreted as percentages (0-100)
+- Parameters with the `-threshold` or `-th` suffix are interpreted as absolute threshold values
+- The `-threshold` suffix can be abbreviated as `-th`
 - If multiple synonyms are specified, the lattermost (last encountered)
   synonym takes precedence
 - Separate thresholds can be specified for postrin and negtrin using the
@@ -36,11 +43,11 @@ postrinInd/negtrinInd with the "importance" argument set to "INTERESTING".
 
 **Example:**
 ```
-+idev|my-device|pcloudIntensity(postrin-interest-threshold=50|negtrin-interest-threshold=30)|livoxGen1-pcloudIntensity()|livoxProto1()|3JEDK380010Z39
++idev|my-device|pcloudIntensity(postrin-interest-percentage=50|negtrin-interest-threshold=30)|livoxGen1-pcloudIntensity()|livoxProto1()|3JEDK380010Z39
 ```
 
-This example sets the interest threshold to 50 for postrins and 30 for
-negtrins.
+This example sets the interest threshold to 50% for postrins (percentage-based) and 30 for
+negtrins (absolute threshold value).
 
 ## Distraction Threshold Parameters