Update abs.mdx

website/docs/language/functions/abs.mdx

@@ -2,14 +2,21 @@
 page_title: abs - Functions - Configuration Language
 description: The abs function returns the absolute value of the given number.
 ---
+# abs function reference
+This topic provides reference information about the abs function. The abs function returns the absolute value of the given number.
+## Introduction
+abs returns the absolute value of the given number. If the number is zero or positive, the function returns the value as-is, but if it is negative, it is multiplied by -1 to make it positive before returning it.
 
-# `abs` Function
+## Syntax
+Use the abs function with the following syntax:
 
-`abs` returns the absolute value of the given number. In other words, if the
-number is zero or positive then it is returned as-is, but if it is negative
-then it is multiplied by -1 to make it positive before returning it.
+```
+abs(number) 
+```
 
-## Examples
+The number is the number you want the absolute value of.
+
+In the following example, the function returns the absolute value of 23, 0, and -12.4.
 
 ```
 > abs(23)
@@ -19,3 +26,17 @@ then it is multiplied by -1 to make it positive before returning it.
 > abs(-12.4)
 12.4
 ```
+
+## Example use case
+The following example defines a variable num that is negative. The function outputs the absolute value of num, which is 10.
+```
+variable "num" {
+  default = -10
+}
+
+output "absolute_value" {
+  value = abs(var.num)
+}
+```
+## Related Functions
+[signum](/terraform/language/functions/signum) determines the sign of a number, returning a number between -1 and 1 to represent the sign