syn region BacFSInc contained display start="Include {" end="}" contains=BacString,BacComment,BacFSOpt,BacFS1
syn region BacFSExc contained display start="Exclude {" end="}" contains=BacString,BacComment,BacFSOpt,BacFS1
syn region BacFSOpt contained display start="Options {" end="}" contains=BacString,BacComment,BacFSOpt1,BacFSOpt2
-syn keyword BacFSOpt1 contained verify signature onefs noatime RegexFile Exclude Wild WildDir WildFile
+syn keyword BacFSOpt1 contained verify signature onefs noatime RegexFile Exclude Wild WildDir WildFile CheckChanges
syn match BacFSOpt2 contained /ignore case/
syn keyword BacFS1 contained File
syn match BacFS2 contained /Enable VSS/