+File header:
+
+Below is the list of filetypes that MY A3k 
+was configured with on power-up. I figured
+it to be a good place to start. I've commented
+out those that I KNOW contain only ascii text
+in the first place and it would be silly to 
+encode. Actually, !U2 treats FFF as encoded, 
+anyway.
+
+Comment out a line by starting it with '+'
+It is VITAL that the only lines NOT starting
+with '+' are those that contain the entries 
+you want.
+
+U2 WILL ONLY TAKE NOTICE OF THE FIRST 50
+UNCOMMENTED FILETYPES.
AE9 : Alarms
AFF : DrawFile
BBC : BBC ROM
DDC : Archive
FC6 : PrntDefn
FC8 : DOSDisc
FCA : Squash
FCC : Device
FCF : Cache   
FD6 : TaskExec
FD7 : TaskObey
FE4 : DOS
+FEA : Desktop
+FEB : Obey
FEC : Template
FED : Palette
FF2 : Config
FF4 : Printout
+FF5 : PoScript
FF6 : Font
FF7 : BBC font
FF8 : Absolute
FF9 : Sprite
FFA : Module
FFB : BASIC
FFC : Utility
FFD : Data
+FFE : Command
+FFF : Text             
+
+This line must be here.