(
"<spaces>name" -- )
Skip leading space delimiters. Parse
name delimited by a
space. Create a definition for
name, called a "code
definition", with the execution semantics defined below.
Subsequent characters in the parse area typically represent
source code in a programming language, usually some form of
assembly language. Those characters are processed in an
implementation-defined manner, generating the corresponding
machine code. The process continues, refilling the input buffer
as needed, until an implementation-defined ending sequence is
processed.