adds term for variable length, shortens stream

Author: m00sey

spec/spec.md

@@ -147,15 +147,11 @@ ISO and IEC maintain terminological databases for use in standardization at the
 
 [[def: Variable Length]]
 
-~ todo
-
-::: issue
-https://github.com/trustoverip/tswg-cesr-specification/issues/17
-:::
+~ a type of count code allowing for vaiable size signatures or attachments which can be parsed to get the full size
 
 [[def: Stream]]
 
-~ a CESR Stream is any set of concatenated Primitives, concatenated groups of Primitives or hierarchically composed groups of Primitives.
+~ any set of concatenated Primitives, concatenated groups of Primitives or hierarchically composed groups of Primitives.
 
 [[def: Version String]]