File: prompt.doc

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\DOC prompt

\TYPE {prompt : (bool -> bool)}

\SYNOPSIS
Switches the ML prompt on or off.

\DESCRIBE
{prompt true} switches on the ML prompt (which is `{#}' by default);
{prompt false} switches it off. In either case, {prompt} returns the previous
state ({true} for on, {false} for off).

\FAILURE
Never fails.

\SEEALSO
set_prompt.

\ENDDOC