//Format:"[Sig1]","[Sig2]","[Sig3]",[Offset1],[Offset2],[Ext],"[Descrip]",[ExtType],[Tag],"[AWinOpensWith]","[AMacOpensWith]","[ALinuxOpensWith]","[ACompany]"

To add a new signature please follow the above Scheme Format 

Let's take the exemple of the Winrar Acrchive File :

Sig1:"$52,$61,$72,$21,$1A,$07,$00"
Sig2:< not used so let it Blank >
Sig3:< not used so let it Blank >
Offset1:< not used so let it with default Value Zero 0 >
Offset2:< not used so let it with default Value Zero 0 >
Ext:.rar
Descrip :"WinRAR compressed archive"
ExtType(*): feArchive
Tag:0 < default value is ZERO 0 >
AWinOpensWith:RARLAB WinRAR
AMacOpensWith:UnRarX
ALinuxOpensWith:unrar
ACompany :RarLab.inc





(*) it takes One of these values :
feAudio,feVideo,feGraphics,feDocument,feArchive,feData,
feInternet,feExecutable,feCursor,feIcon,feEmail,fePdf,
feHelp,feShortcut,feSystem,feDOS,feExe32,feExe16,feDLL32,
feDLL16,feVXD,feUnknown,feError