+ public abstract int show_fraction(int width, boolean imperial_units);
+
+ public double parse(String s, boolean imperial_units) throws NumberFormatException {
+ double v = Double.parseDouble(s);
+ return inverse(v, imperial_units);
+ }
+
+ public double parse(String s) throws NumberFormatException {
+ return parse(s, AltosConvert.imperial_units);
+ }
+
+ public double value(double v) {
+ return value(v, AltosConvert.imperial_units);
+ }
+
+ public double inverse(double v) {
+ return inverse(v, AltosConvert.imperial_units);
+ }
+
+ public String show_units() {
+ return show_units(AltosConvert.imperial_units);
+ }
+
+ public String say_units() {
+ return say_units(AltosConvert.imperial_units);
+ }
+
+ public int show_fraction(int width) {
+ return show_fraction(width, AltosConvert.imperial_units);
+ }
+
+ int say_fraction(boolean imperial_units) {