Updated WorldEdit FAWE mask list (markdown)

WorldEdit---FAWE-mask-list.md

@@ -1,11 +1,20 @@
 # Masks
 A mask is a restriction on an edit e.g. only replace blocks below stone. Global masks apply to all edits, brush masks apply to just the current brush.
+
+Separating masks by spaces (` `) or colons (`:`) uses the intersection of all masks (all of them must be true). Separating masks by commans (`,`) uses the union of the masks, and only one has to be true.
+
 #### `//gmask [masks...]`    
 Perm: `worldedit.global-mask`
-Desc: Set the global mask
+Desc: The global destination mask applies to all edits you do and masks based on the destination blocks (i.e. the blocks in the world).
+#### `//gsmask [masks...]`
+Perm: `worldedit.global-mask`    
+Desc: The global source mask applies to all edits you do and masks based on the source blocks (e.g. the blocks in your clipboard)    
 #### `//mask [masks...]`
-Perm: `worldedit.brush.options.mask`
-Desc: Set the brush mask (separate multiple masks by spaces ` ` or colons `:`)
+Perm: `worldedit.brush.options.mask`    
+Desc: Set the brush destination mask
+#### `//smask [masks...]`
+Perm: `worldedit.brush.options.mask`    
+Desc: Set the brush source mask
 
 ## List of masks
 #### Simple masks
@@ -21,19 +30,21 @@ Desc: Set the brush mask (separate multiple masks by spaces ` ` or colons `:`)
 `#iddata`: Restrict to initial id and data    
 `#wall`: Restrict to walls (any block n,e,s,w of air)    
 `#surface`: Restrict to surfaces (any block touching air)    
+`#nolight`: Restrict to blocks without light (sky or emitted)
+`#haslight`: Restricts to blocks with light (sky or emitted)
 #### Block mask `[blocks]`
 Example: `stone,wood`        
 Explanation: Allows any block which is already stone or wood
 #### Angle mask `/[min],[max]`    
 Example: `/-20,-5    
 Explanation: Allows any block where the adjacent block is between 20 and 5 blocks below
-#### Radius mask `{[min],[max]`    
+#### Radius mask `{[min]:[max]`    
 Example: `{5,20`    
 Explanation: Restricts blocks to within a specific radius range of the initial block
-#### Adjacent mask `~[pattern][=min[,max]]`    
+#### Adjacent mask `~[pattern][=min[:max]]`    
 Example `~stone,wood`    
 Explanation: Allows any block if it is adjacent to stone or wood
-Example: `~bedrock=2,4`
+Example: `~bedrock=2:4`
 Explanation: Allows any block if it is adjacent to between 2 and 4 bedrock
 #### Below mask `<[pattern]`    
 Example: `<stone`    
@@ -54,6 +65,15 @@ Explanation: Can negate any mask, this will allow any block not below stone
 Example: `=abs(z+1)%2-abs(x)%2`    
 Explanation: Restricts to blocks where x and z coords are even numbers.    
 Info: http://wiki.sk89q.com/wiki/WorldEdit/Expression_syntax
+#### offset mask
+Example: `#offset:1:0:0:stone`
+Explanation: Requires the block to the east to be stone
+#### Light masks
+ - `#light:<min>:<max>`
+ - `#skylight:<min>:<max>`
+ - `#blocklight:<min>:<max>`
+ - `#opacity:<min>:<max>`
+ - `#brightness:<min>:<max>`
 
 ## Registering a mask through the API
 ```Java