updated increase doc, address PR feedback

content/v2.0/query-data/flux/increase.md

@@ -4,8 +4,8 @@ seotitle: Calculate the increase in Flux
 list_title: Increase
 description: >
   Use the [`increase()` function](/v2.0/reference/flux/stdlib/built-in/transformations/aggregates/increase/)
-  to calculate the increase in values since the beginning of the series or table.
+  to track increases across multiple columns in a table.
-  This function is especially useful when tracking changes in counter values which
+  This function is especially useful when tracking changes in counter values that
   wrap over time or periodically reset.
 weight: 210
 menu:
@@ -21,8 +21,8 @@ list_code_example: |
 ---
 
 Use the [`increase()` function](/v2.0/reference/flux/stdlib/built-in/transformations/aggregates/increase/)
-to calculate the increase of values in a table.
+to track increases across multiple columns in a table.
-This function is especially useful when tracking changes in counter values which
+This function is especially useful when tracking changes in counter values that
 wrap over time or periodically reset.
 
 ```js
@@ -30,6 +30,9 @@ data
   |> increase()
 ```
 
+`increase()` returns a cumulative sum of **non-negative** differences between rows in a table.
+For example:
+
 {{< flex >}}
 {{% flex-content %}}
 **Given the following input:**

content/v2.0/reference/flux/stdlib/built-in/transformations/aggregates/increase.md

@@ -1,6 +1,8 @@
 ---
 title: increase() function
-description: The `increase()` function calculates the total non-negative difference between values in a table.
+description: >
+  The `increase()` function calculates the cumulative sum of **non-negative** differences
+  between subsequent values.
 aliases:
   - /v2.0/reference/flux/functions/transformations/aggregates/increase
   - /v2.0/reference/flux/functions/built-in/transformations/aggregates/increase/
@@ -11,8 +13,8 @@ menu:
 weight: 501
 ---
 
-The `increase()` function calculates the total non-negative difference between
+The `increase()` function calculates the cumulative sum of **non-negative** differences
-subsequent values.
+between subsequent values.
 A main use case is tracking changes in counter values which may wrap over time
 when they hit a threshold or are reset.
 In the case of a wrap/reset, we can assume that the absolute delta between two
@@ -58,8 +60,8 @@ Given the following input table:
 | _time | _value |
 | ----- | ------ |
 | 00002 | 4      |
-| 00003 | 7      |
+| 00003 | 4      |
-| 00004 | 8      |
+| 00004 | 5      |
 
 ## Function definition
 ```js