[REBOL] How to parse BINARY type

[reboldes]

Hi, I want to make a script which will analyze a gif files. to read file i use: >> gif: read/binary %my.gif == #{ 47494638396196005900B30000FFFFFFE2E2E2C2C2C2A2A2A28181815B5B5B31 31310101010000000000000000000000000000000000000000000000002C...   ....but how to work with this binary type?   I know that first 3 bytes means the signature... next 3 bytes version ... etc. so: >> to-string #{474946} == "GIF" >> to-string #{383961} == "89a"   than 8. and 7. byte means  the Logical Screen Width: >> to-integer #{0096} == 150     What I don't know is how to parse the binary type (for example how to get the first 3 bytes or the seventh byte)?   Is there any way how to get from binary #{4749463839619600} string "4749463839619600" ?   oLdes