i: Parser
t:   >number
   [ 10 parse >number ] is #:
   #: 10
   -1 try 10 try
cr
i: Number prefixes
t:   #
   #100 #-100 -100 try 100 try
t:   $
   $a $-a -10 try 10 try
t:   %%
   %11 %-11 -3 try 3 try
t:   &
   &144 &-144 -100 try 100 try
