{ TFileStream create mode }
fmCreate = $FF00; { Create a file with the given name. If a file with the given name exists, open the file in write mode. }
fmExclusive = $0004; { when used with FileCreate, atomically creates the file only if it doesn't exist, fails otherwise }
fmOpenRead = $0000; { Open the file for reading only. }
fmOpenWrite = $0001; { Open the file for writing only. Writing to the file completely replaces the current contents. }
fmOpenReadWrite = $0002; { Open the file to modify the current contents rather than replace them. }
fmShareCompat = $0000 platform; { DOS compatibility mode is not portable, Sharing is compatible with the way FCBs are opened. }
fmShareExclusive = $0010; { Other applications can not open the file for any reason. }
fmShareDenyWrite = $0020; { Other applications can open the file for reading but not for writing. }
fmShareDenyRead = $0030 platform; { Other applications can open the file for writing but not for reading, write-only not supported on all platforms }
fmShareDenyNone = $0040; { No attempt is made to prevent other applications from reading from or writing to the file }