user-hint-directive = ( $UHINT | $UH ) [ condition "," ] message .
Display a user hint message.
<condition>:
An optional boolean expression that conditions the action: if true the hint is treated.
<message>:
A string expression that gives a literal string.
{$IF FREQUENCY < 4000000}
{$UHINT ’Inaccurate timings will occur at this frequency’}
{$IFEND}
{$UHINT FREQUENCY < 4000000, ’Inaccurate timings will occur at this frequency’}