The variables used by the Forth kernel.
	All are in the user area.

  \ First 3 user variables are used for multitasking )
/n 0 * user tos    \ saved top of stack for this task
/n 1 * user entry  \ entry address for this task
/n 2 * user link   \ link to next task

  \ next 2 user variables are used for booting
/n 3 * user up0    \ initial up
/n 4 * user #user  \ next unallocated user location )

  \ nuser allocates the next available user location
nuser sp0          \ initial parameter stack
nuser rp0          \ initial return stack
nuser dp           \ dictionary pointer
nuser 'tib         \ terminal input buffer
nuser width        \ width of name field
nuser warning      \ control of warning messages
nuser fence        \ barrier for forgetting
tuser voc-link     \ points to newest vocabulary
\ nuser blk        \ block number to interpret
nuser >in          \ offset into input stream
nuser >out         \ number of characters emitted
nuser scr          \ screen last listed or edited
nuser offset       \ relative to absolute disk block 0
nvocs /n * ualloc-t user context   \ vocabulary searched first
nuser current      \ vocabulary which gets definitions
nuser state        \ compilation or interpretation
nuser base         \ for numeric input and output
nuser dpl          \ numeric input punctuation
nuser ptr          \ numeric input punctuation
nuser fld          \ output field width
vnuser csp          \ for stack position error checking
nuser r#           \ editing cursor position
nuser hld          \ points to last character held in pad
nuser blocks       \ range available for writing
nuser erasech      \ user's erase character - usually bs or del
nuser ?interactive \ control over prompts
nuser numberok     \ status variable for number1
nuser  #out        \ number of characters emitted
nuser  #line       \ the number of lines sent so far
nuser  prior       \ used for dictionary searches
nuser  last        \ points to nfa of latest definition
nuser  span        \ number of characters expected
nuser  #tib        \ number of characters to interpret
nuser  end?        \ true if input stream exhausted
/l ualloc-t user syscall-vec   \ long address of system call vector

nuser caps         \ controls upper/lower case sensitivity
nuser delimiter    \ delimiter actually found at the end of the last word
tuser dodoesaddr   \ the address of the dodoes routine
nuser avoc         \ remembers the previous context vocabulary during assembly
/l ualloc-t user caller-stack  \ The initial stack frame