Update HelpMe.md

-Add Arithmetic
-Add explose
-Add Add
-Add reroll

1 files changed, 49 insertions, 16 deletions

diff --git a/HelpMe.md b/HelpMe.md
index 60e80ab..5eea49c 100644
--- a/HelpMe.md
+++ b/HelpMe.md
@@ -7,7 +7,7 @@ It is real simple. you have to call:
 
 The first number is the count of dice you want to roll. The second number should be die's faces count.
 
-### Example
+### Examples
 > 1d6
 
 Roll one six-faced die.
@@ -53,39 +53,72 @@ Dice explose if their value are at the die maximum, the option sorts the resulti
 The dice list is sorted in descending order.
 
 
-> 3D10c[condition]
+> 3D10c[Validator]
 
-Count how many dice respect the condition. And display the number. (See boolean condition and range for more details about the condition)
+Count how many dice respect the condition and display the number (See Validator for more details about syntax)
 
-> 3D10rX
+> 3D10r[Validator]
 
+Reroll the die if the previous value fits the validator (See Validator for more details about syntax).
+
+> 3D10e[Validator]
+
+Explose while the value fits the Validator (See Validator for more details about syntax).
+
+> 3D10a[Validator]
+
+Reroll the die if its value fits the Validator and add the new value to the previous one. It does that only once.
+
+
+## Arithmetic
+
+Rolisteam Dice Parser is able to compute primary arithmetic operation such as: +, -, /, * and it also manages those operator priority and it can also manage parenthesis. 
+
+> 8+8+8
+
+Result: 24
+
+> 24-4
+
+Result: 20
+
+
+
+## Examples
+
+> 3D100
 
-### 3D100
 Roll 3 dice with 100 faces
 
-### 10D10e[=10]s
+> 10D10e[=10]s
+
 Roll 10 dice with 10 faces, 10 exploses, and sort the result.
 
-### 100291D66666666s
-roll 100291 dice with 66666666666 faces and sort result
+> 100291D66666666s
+
+Roll 100291 dice with 66666666666 faces and sort result
+
+> 15D10c[>7]
 
-### 15D10c[>7]
 roll 15 dice with 10 faces and it counts number of dice which are above 7
 
-### 1D8+2D6+7
+> 1D8+2D6+7
+
 roll 1 die with 8 faces and add the result to 2 dice with 6 faces and add 7.
 
-### D25
+> D25
+
 roll 1 die with 25 faces
 
-### 88-1D20
+> 88-1D20
+
 88 minus the value of 1 die of 20 faces
 
-### 8+8+8
+> 8+8+8
+
 compute: 24
 
+> 100/28*3
+
 
 
-### 100/28*3
-compute: 100/28 = 3
-3*3 = 9