Improvement for the INPUT command

[compsystems]

For the case of a single data, if the entered data is correct, if there is an extra step, but if the entered data is incorrect, how do you re-edit it?

In user-RPL works for a single field, same as my suggestion

PHP Code:

"title"
{
{ "x" "help" 0 }
}
1
{ 98 }
{ 99 }
INFORM
IF
THEN
 { 'x' } STO
END

"title"
{
{ "y" "help" 0 }{ "z" "help" 0 }
}
1
{ 87 76 }
{ 88 77 }
INFORM
IF
THEN
 { 'y' 'z' } STO
END