In interactive usage Gforth shows the status after processing each line. The status consists of the “prompt” behind the end of the output of the words on the line and optionally a status bar at the bottom (on by default if the terminal is a colour terminal).
The prompt shows the current text interpreter state (ok
(interpretation), compiling, or postponing) and the
number of items on the data stack (nothing shown if empty) and the FP
stack (nothing shown if empty). E.g., if there are two items on the
data stack and one item on the FP stack, 2 f:1 is shown.
The status bar is in blue for interpretation, magenta for compilation,
and red for postponing state. By default it shows the contents of
base in decimal (not shown when the base is decimal), the
number of items on the data stack and the top items of the data stack,
the number of items on the FP stack, and the top items on the FP
stack, the search order and the current wordlist. What is shown can
be changed by changing the contents of status-xts, but that is
currently not documented, apart from turning the status bar off
completely:
Turn off the status bar at the bottom of the screen
Turn on the status bar at the bottom of the screen