else return 64
```
-# alternative **no 32 encoding** (3) **current**
+# alternative hybrid 32-64 encoding (3) **current**
aim of this idea is to attempt simplification of area identification
and length. the 55-bit area is eliminated and may only be reintroduced
return True
```
-# alternative 32-64 encoding (4) **current**
+# alternative **no 32 encoding** 64-bit only (4) **current**
this idea gets even simpler. the 55-bit area is eliminated and may only be
reintroduced by sacrificing parts of EXT200-263. however doing so **WILL** damage
* bit 31 is "SSingle"
* bit 30 is EXT200-263 if set otherwise EXT000-063
-This was one of the original early PO9 Encodings.
+(note: this is one of the original early PO9 Encodings,
+ proposed in [[rfc/ls001]] and rejected at the time:
+ with hindsight it should not have been)
**Identification**: