Input a default value

[salvomic]

How recall INPUT() if there is an error?
I mean, I have this

Code:


...
INPUT(aleph, "Title", "input aleph value", "Aleph is a bogus var", 0, 3);
IF (aleph < 1) THEN ... // there is an error but please don't exit...
...

if aleph value is <1 I don't want the program exit but that it recall INPUT() again to correct value...