A persistent 2
nd
in input switches to fraction
mode. It will be interpreted as explained below.
Please note you cannot enter after you
entered twice but you may delete the 2
nd
dot
while editing the input line.
First is interpreted as a space, 2
nd
as a frac-
tion mark. E.g. input of results in
2 ¾ in the display. Improper fractions may be
entered starting with a , e.g. .
Appends a slash to alpha.
Appends the respective symbol to alpha.
Inserts a radix mark as selected.
Appends the respective symbol to alpha.